Yamaha 115 2 stroke running rich. Mark the throttle grip at 1/4 and 3/4 openings.

The pee hole is good and Sep 23, 2006 · Hi, i just recently purchased a 17 ranger R77 with a Yamaha 115hp outboard. So compressions fine,And adjusted alll floats in carburator yesterday. Serial # F 115 AET L 1102365 G 68 V. Dec 10, 2015 · not all yamaha's sound a buzzer when cranking with the stop lanyard removed. I run ring free in my 115 all the time, one oz. It now has a new top end, new boyesen reeds, Uni-air filter, new gasket set, oil-injection has been removed, new ebay special carb. I was convinced it was a fuel delivery issue. In addition to the general issue of a Yamaha outboard not reaching full RPM, 2-stroke outboards may experience specific problems that result in power loss at full throttle. Consult desired hour is displayed. It will bog, misfire, backfire, pop, and just not sound right. It cuts the amount of airflow and richens the air/fuel mixture. It has been some what of an okay engine up until now. Resistance was in the middle of the acceptable range, and the I’ve done a ton of research over the years (as well as tossing a 2-stroke weed eater against a wall in frustration) trying to understand this issue. I hope to save you a ton of time with this short and precise troubleshooting guide. Nov 4, 2016 · Some like to run a two stroke a bit on the rich side to prevent bad stuff that can happen if and when the motor runs lean. Once on plane the engine runs fine and only runs poorly at idle or in gear. I'm going to check out the fuel system from the tank to the fuel pump and see if there's any air leaks, and then look for the fuel filter and clean or replace, then onto the fuel pump and see what kind of vacuum it has. If I throttle back to low RPM (2000-3000) it completely stops and I can then throttle back up. May 13, 2016 · Hey guys, looking for a little help understanding why the float height makes such a difference. 1 mph, and we planed off in just over four seconds, all while running a 16-pitch Yamaha Talon three-blade aluminum prop equipped with the Yamaha Shift Dampener System (SDS™) hub. 9/15hp 2-stroke) is on the port side of the motor and has a clear container and a nut on top. 8-litre displacement. Jul 1, 2023 · 2-Stroke Outboard Loses Power at Full Throttle. May 24, 2016 · So I am new to this forum and am looking for help. Jan 1, 2013 · The 115/130hp Yamaha V4 two strokes are arguably some of the most reliable outboards ever built. Our fuel/oil mix ratio chart takes all the guess work out of the process. new head gasket. Initial sea trial 5. Jun 1, 2019 · As seen in the photo, it is no longer running rich. We have had the on going issue with the engine May 6, 2019 · I've got a 115 hp Yamaha 2 stroke. no single engine Yamaha self tests the buzzer at key on. Jun 5, 2024 · Gary Reich is a Chesapeake Bay-based freelance writer and photojournalist with over 25 years of experience in the marine industry. Mixture Screws An Outboard Motor smokes because it is burning oil. 5mm. He decided to just get rid of it and buy a new boat. Took the boat out yesterday, fired right up at the dock, idle perfect, idled out of marina and for the next 2 hours ran great pulling kiddo's around the lake. However, the fixed air/fuel mix that is being allowed in via the idle mixture passages is very very rich. labor for the install and testing in all cost $1500. 5 ms at lower rpm to 5-6 ms above 4000 rpm. charged me 10hrs. Timing seemed to fluctuate a bit, not sure if this is normal. Jun 28, 2011 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. To date: -Replaced small Sep 14, 2020 · Hi all, I'm having an issue with my 4-stoke its sputtering for about 15 minutes, wont let me know get over 3100 RPM. Turned her off to fish a while. Yamaha outboard that's running rich. Less than 200 hours. Hope that's it, because it's a real easy, and cheap($50) fix for new pump. Yamaha 115 no spark Aug 26, 2020 · I have a 2000 Yamaha 115HP 2 stroke. Feb 16, 2019 · Hi All, I’ve got a 2014 built Yamaha 115 4 stroke on my 189FS. I used premium fuel with no ethanol and semi-synthetic 2 stroke oil. Aug 4, 2013 · Re: 115 yamaha 2stroke bogging down The 90/10 gasoline is giving marine mechanics a lot of work. The carburetors on your boat virtually never need rebuilding. The engine ran labored and rough when starting to plane. Aug 13, 2018 · I have a 98 Yamaha 115 2 stroke that I bought used. Test weight includes Power Pole, 2 Lithium Ion batteries, 2 people, 5 gallons of fuel, safety and test gear. If you didn’t know, the Yamaha 115 is one of the most popular outboard motors in the world. Only 1 person in the boat. Aug 11, 2013 · Hello to the group. Hi guys, back for more. I have been seeing that 32:1 is leaner than 40:1 because of how much gas is present. The plugs are all the same, black dry (not wet) coloring similar to a rich gas mixture. Jun 26, 2024 · What Happens When You Run A 2 Stroke Rich? Running a 2 stroke rich will most commonly result in: Fouled spark plugs; Smokes a lot; Poor throttle response; Low power; Spooge out the exhaust; Lower fuel economy; Floods more easily; Harder to start when hot; As you can see, there’s a lot of potential problems if you run your 2 stroke dirt bike Jun 4, 2020 · 40 HP 2-stroke, symptoms include poor idle, excessive fuel consumption, and substantial carbon build-up. What else in a 2-stroke was available at the time i do not know. This engine has 4 cylinders. The horn will be sounding indicating there is a problem. Has FMF fatty and FMF shorty exhaust on it. The fuel filter (on my 9. Starts hot fine if I try to restart it right away. I took it for the first run and the next day pulled the cover to check the motor and found half of the oil injection bottle on the engine had dumped into the plastic carburetor cover and had gotten deep enough in the lower cowling to start dripping down the throttle and shift cables into Continuously running a flooded motor will degrade its components while subsequently reducing the life expectancy of your motor. The all-new 2022 Yamaha 115HP – 20″ Shaft is Yamaha’s fastest 115-hp four stroke, with a top speed of nearly 51 mph. Aug 14, 2010 · I have a 1991 mercury 90 HP 2 stroke 3 cylinder,That is running very rich. Loosen and remove the nut, pull the filter unit away from the engine a few inches leaving the hoses all attached, and unscrew the container with the filter inside. Press the “ ” (mode) button until the the gauge will give false readings. Like the choke plate was partially closed…. It is by far the fastest bike I have ever ridde Jul 11, 2010 · Check for bad fuel pump causing raw gas to get sucked into lower cylinder causing very rich mixture, wet spark plug, poor running. There are a couple of tricks that can be done to reduce the amount of smoke that an engine burns and here are your best options! Jun 20, 2014 · My 90 97' Yamaha 2 stroke is running very rich and fouling plugs which is causing poor idling and operation while in gear. This motor has oil Injection, power tilt and trim, 20" Shaft, and is in very clean condition. all the 6y5 series tachs self test the visual indicates at key on. Oct 8, 2009 · Right, the chart is good, especially for safety and a straight through silencer. Compression is very strong on this 115 hp Yamaha at around 120psi even. Apr 27, 2018 · I have a Yamaha 115 hp 2 stroke model 0115TLRP, (serial 6E5-L-320813), which starts up and idles, but it runs really rough with "sneezing/coughing" and smoke. In such situations, it becomes crucial to diagnose the problem and fix it to ensure smooth and efficient … 2-Stroke Outboard Loses Power at Full Throttle: Causes & Fixes Jun 15, 2010 · Re:02 Yamaha f115 tlra 4 stroke rough idle and stall Re:02 Yamaha f115 tlra 4 stroke rough idle and stall I am still trying to figure this out. Then I'd change plugs whether they needed them or not. Aug 15, 2014 · The needle setting on my A/C is only 1 groove different to standard so not overly rich about 12%, on your LC I wouldn't go leaner its not worth it, also its not just the mains that is effected by ethanol all the jet are running leaner, the racers recon ethanol reduces the octane about 10% which makes my bike 2% rich from standard. It worked this way on my chain saw once I got the special tool to turn out the idle mixture screw so the damn thing would run. Now, top speed is 29MPH. It is rolling type of sound then idles normal for half a second then back to rolling. May 19, 2019 · A friend has: 115 HP 4 Stroke EFI Model F115TLRB Serial Number 68VL101495 After the boat is cruising on plane and brought abruptly to idle, the motor will Jul 13, 2009 · Utilizing my TrailTech Vapor, my coolant temps run in 160-180 range running through the trails on my basically stock 2008 YZ250. The reason being whenever idling out on the water or motoring around at low speed the motor starts to run rough (like it is missing) and gets quite smoky. I purchased the engine brand from the dealer. Are you can get plugs at boat house for thurty bucks, same plugs. I have checked the fuel filters and fuel lines all our ok. At 750 rpm, timing ranged from TDC to 5 ATDC. New fuel pump is about $50, very easy 2 screw replacement. Read on to learn more about the Yamaha 115. They are even fairly effecient for carbed two strokes. Maybe better to err on the rich side than the lean side. Dec 8, 2019 · If the pressure is correct to begin with, disconnecting the sensing hose should only cause it to run a bit rich (but not die). When you get to these screws on the machine you would need to get a screwdriver and screw these really tight until they can't go in anymore, so that will set them at ground zero, preventing the fuel from going any further. Kept in fresh water in South Carolina. So I would say it's running too rich to begin with. The thermostats are not bypassed. Mar 6, 2020 · Using the same carburetor, on the same basic 125 engines, since then I think the Yamaha/Mikuni discovered there is more potential in using a larger pilot jet and, larger air screw settings (now about 2-1/4 turns out is stock) Mar 1, 2011 · Success!!! I finally persevered and got my Yamaha 115 running like a champ. if it had a choke plate. i want to use the ceto electrics as the aeto electrics are quite junk and old. It seemed to be running rich because of what I thought was excessive smoke. Jul 27, 2016 · The SHO 115 pushed it to 45. In this blog post, we’ll explore common problems associated with Mercury 2-stroke outboard engines and provide detailed, step-by-step solutions for fixing them Sep 4, 2012 · Re: Yamaha 90hp 2 stroke 1997 - misfire/rough idle at low revs and strong exhaust sme Sounds like bad/cracked fuel pump diaphragm causing raw gas to get sucked into motor causing very fuel rich/wet spark plug condition. new pump is only 35-40 dlrs. thanks so much Daniel 2001 115TLRZ Yamaha 115hp 130hp 2 stroke outboard powerhead Running Take off. For starters, the 115 from Yamaha is the lightest DOHC 115 HP in-line 4-stroke on the water, considering the nearest competitor is heavier by 25 pounds. Jun 19, 2020 · 2005 F115TLR Low Hours-Low Usage Starts fine, idles fine Will NOT pull past 4,000 WOT Can 'sneak up on it' and get it to about 4,000, maybe a bump over. When I removed the spark plugs (I've changed plugs twice) they had a good amount of black oil on them. Start the motor. Manual says 6. I spent hours chiseling ice from inside the bilge and storage this week. 3 psi. I just found this in spanky's thread: THE FLOAT LEVEL IS THE FIRST STEP TO PROPERLY DIALIN May 16, 2016 · Nope. Common causes for this issue include: Incorrect Fuel Mixture: 2-stroke engines require a specific fuel-to-oil mixture. Nov 6, 2011 · Re: Question: 115 / 130 V4 yamaha 2 stroke carburator adjustments My yamaha manual says for a 1995 115 Pilot screw turns out 5/8 + - 1/4 1995 130 pilot screw turns out 7/8 + - 1/4 That means approx. L 09/08. Dec 5, 2017 · The Yamaha 115 4 stroke wiring diagram displays a detailed map of each component, wire and its relationship with other components, wires and connections. With a fresh top and bottom end rebuild. AND then sitting for 30 minutes. Page 35: Fuel Level-Alert Indicator I have a 1999 Yamaha 115 and at the end of season it was running great I pulled it out and ran it for the first time this year and it starts and runs great all the way up until 3/4th throttle then it starts lurching and stuttering. Including a long-track intake system, free-flow exhaust and knock sensor. Dec 14, 2006 · A rich running two-stroke will give you the dark, wet plug and spooge problems. I’d like to compare that to the curve for the F115B motor. Will finally start Mar 16, 2011 · Re: 2003 yamaha 115 4 stroke bogs down, misses badly above idle I would do a leak down test to make sure cylinders are sealing properly to start out with, I am not sure how the 4 stokes hold up when running lean, but it is always a good idea to make sure the motor is in good shape before chasing things around. Had carbs redone, non ethanol gas and new plugs by a so called certified mechanic. The problem, or better stated problems, were 1) a bad low pressure fuel pump (LPFP) diaphragm 2) partially clogged fuel injectors. Turn in, lean sneeze. Mar 20, 2014 · Bike has fresh top end with about 2 hours on it. ) The fuel injection system has been cleaned, new spark plugs have been installed and new fuel filters. Fuel injector duration ranged from about 2-2. BUT if I run it for say 30 minutes across the bay and then let it sit for 30 minutes, it is difficult to start. He is the former editor of PropTalk Magazine and was the managing editor of the Waterway Guide. At 1400 rpm it was TDC +/- 1. I have the idle turned up to 1200 rpw and even then I have to baby it to keep it from stalling. Jul 21, 2022 · Cam timing can “jump” out of place. Oct 9, 2006 · Yes, an over-oiled filter can cause a bike to run rich, just like a dirty one. If you want to adjust your idle use your idle adjust screw. Sorry for any confusion on my part. If you can slowly play with it and get it past that spot it runs fine at high rpms (just getting it to that point is the issue. Tach goes crazy up and down and engine really hesitates, and dies. Customer: I have a 2016 Yamaha 115 SHO four stroke. I've ruled out a lot of potential causes, and have become suspicious of the prime start system. It's really unhealthy on your fuel pump which has a rubber membrane. When in idle the engine constantly cuts off. I'd just go ahead and change the thermostats anyway--due to the age of the motor. This diagram will give you an overview of the wiring within your engine, so that you can easily identify which wire is connected where, as well as how it gets connected. On the image above you can see your high screw (the little H) and then you've got your low screw (the little L). The issue comes up when people want better response for off road technical riding and/or Apr 13, 2009 · There was an unbelievable amount of spooge running all the way down the silencer and splattered all over the swingarm. Four Stroke Engines burn oil at startup mainly because of oil left in the cylinders or all the time with an oil leak. Aug 5, 2008 · "I have a 2001 yamaha 115 4 st "I have a 2001 yamaha 115 4 stroke that started running bad about a mo. Two-stroke engines are a type of internal combustion engine that is actually very similar to four-stroke Apr 4, 2015 · This issue started 2 days ago when I got a crab trap caught in the prop. I can see the engine kind of bucking on the transom like a 2 cylinder 2 stroke outboard would on a boat at idle. It's been running like a champ for about 5 days out on the water until today. But these are not Yamaha's. is there a way to emergency transfer oil from the remote tank to tank on the engine? 2. The bike falls on its' face on at take-off in firs May 25, 2020 · F115 Running Rich. fuel rich. It runs fine for a while but then starts doing it again. The motor ran excellent for about two hours before it sounded like the motor was being choked…. Aug 23, 2011 · Sounds like motor is running rich, what are your pilot screws set at. they do wear out after so many years. Acts flooded. Jan 9, 2011 · So its actually its running just about perfect for a 2 stroke, just a little too rich for town so when i spank the smarties off it on the country roads i have a bit of 'spare' to keep her just right fuel wise. Aug 29, 2005 · I bought a 115 yamaha v4 two stroke motor 9well along with the boat) and was told to mix a ratio of 12:1 evry one that i tell this to says that it is way to rich. Now, no spark? Won't start ? Any ideas? Thanks Eddie. Knowing why an outboard idles rough is only the beginning, here is what you need to do to figure out why and how to Aug 6, 2013 · When I run my '98 yamaha 115 2-stroke in the driveway, it smokes quite a bit at startup but then gets better after it warms up. Starts cold fine. Solution: Identify and adjust the problematic parts Sep 12, 2023 · This will help give your 2 stroke Yamaha outboard motor a good performance. It has been "surging while running at 4000rpms and up. 5-2 years with great results and zero fouled plugs. Some flush water can get across the thermostat but not much. More than likely richer than . I have had trouble with the motor running rough on and off for a year. His son blew up the 2 stroke shown and bought the four stroke. I tried going back to BR9's and leaned the bikes out as far as I felt safe and would still foul plugs on a somewhat regular basis. Doesn't sound like what you're seeing. If the cam timing jumps a tooth, it needs to be fixed right away to prevent any more possible damage to your engine. I am running 32:1 pre-mix in it, same as my daughters LT80. In fact, these subtle and insignificant conditions are the common reason behind such idling problems of Yamaha 4 stroke outboard. Jun 21, 2021 · Hey everyone. The motor may not idle correctly, however. Tried running premix oil/gas for about 10 minutes with same result. I have already adjusted the throttle, put new spark plugs and The reason the machine will sit idling with no problem is because it is getting enough fuel for the level of engine speed required, however as soon as we try to increase that speed where we need more fuel there won't be enough available. I will change the T-Stat and pressure control valve (when I find it). Yamaha 115 Outboard Review. A rough idle on an outboard is generally caused by a failed spark plug, a clogged or stuck open fuel injector, a clogged or dirty carburetor, or an engine that has an issue with the timing when dealing with a 2-stroke outboard. #1 Plug fouled and smelled rich. your Yamaha dealer on how to correctly set Press the “ ” (set) button again, the the selector switch. even with the synchronizing screw fully loose, #1, 2 are still moving with #3, 4 Same thing with the next step: (7) Loosen the idling screw 1 and fully close the upper side throttle valve (#1,2). Ring free make by Yamaha. Any time I have idlingtrouble I replace plugs. Whilst I am always happy to try and help in diagnosis, it can be very hard to do so over the phone. Feb 25, 2021 · With a 115 SHO, from the Yamaha bulletins, the little Hell’s Bay runs 51. This fewer amount of parts means that two-stroke engines are lighter, though they are also louder. This is a 115 hp Yamaha 2-Stroke outboard motor. Two-Stroke Engines burn oil all of the time. An air screw setting that is perfect in the cool morning air will likely be too rich in the heat of the mid-day. First off, i just measured mine at about 7mm. I have 15 running hours on the rebuild. Their pontoon offerings, marketed under the name SunCatcher Pontoons, cater to families and recreational boaters seeking a comfortable and versatile platform for fun on the water. What Causes A 2 Stroke Engine To Overheat? The most common reasons for a 2 stroke engine overheating include: Oct 9, 2020 · Two-stroke engines are popular in smaller machines because they provide a high amount of power with fewer parts than a four-stroke engine. The 115 4-stroke is yet another example of this. Any advice? Thanks! Kevin Yamaha has always been known for designing engines made to run hard at high RPM’s. I rebuilt the top and bottom end as well as the carb, has maybe 3 hours on it since the rebuild. But for power to be generated in a 2-stroke outboard motor, some components of the outboard motor play a vital role. Motor has always run in salt water. Best to do this with a thoroughly warmed up engine. Both motors doing exactly the same thing. I have been running the engine on small chop in the Columbia River, 3500 - 4000 RPM at 24 mph. to/3fb8dfnYou can also donate directly to my PayPal:https:/ Feb 7, 2023 · There is nothing more frustrating as a boater than having a bog in your boat’s carburetor. I had it serviced not long ago and ever since I think it is running too rich. to 10 gal. Apr 26, 2016 · I have a 2001 Yamaha 2 stroke TLRZ115 that runs well when cold, after fishing a few spots it seems to not be getting enough gas but will catch up and run ok, after my last outing I noticed that the primer bulb was not firm and could be pumped several times, is it possible that it is getting air in fuel system? where should I be looking other than fuel line and primer bulb Customer: I have a Yamaha 97 2stroke 90 that is running running really rich. Jul 25, 2009 · Re: 99 115 2-stroke vibrates/runs rough midrange Re: 99 115 2-stroke vibrates/runs rough midrange Joe, my 96 mariner 115 2-stroke is doing the same thing also. My buddy, to be on the safe side, changed waterpump, thermostats and sending units. I have a 2000 Yamaha 115 2 Stroke that will not idle under a load. May 26, 2016 · AFTER you get the motor working reasonably well with the stock Yam needle, then drop in the NECJ needle, on the same clip height, and go smaller 1 or 2 sizes in the pilot and 2 or probably 3 sizes smaller in the main. i would like to know if someone could post up "how to tell if your bike is running lean"? it would be much help to me. Aug 18, 2024 · Troubleshooting 2 Stroke Ignition Problems; Troubleshooting 2 Stroke Ignition Problems. Neutral revs, can easily blip past 5,200. Do I have to pull the head to check the passageways? I will try the Saltaway. The motor will never stall but it vibrates excessively and steadily. Ran it to one of the local Islands and noticed what seemed like an intermittent miss in harbor at end of day at 1. :redface: I'm sure this question has been asked a thousand times before however I'm about to sell my 2001 F115 4 stroke and would like to know the hours so far, I took it to a local dealer who connected the engine to a Laptop and has advised that the Engine idle speed is the hours run 679 which I find questionable since this would be about the right idle speed. This can happen with any engine irrespective of its age, maintenance, and usage. But when the motor is running Its smells real rich,hit the choke{enrichen Feb 21, 2008 · I have a 2000 Yamaha 115 it has been hard on plugs, even when new. New would be best. Then, take it out of gear (forget about tach setting in gear) and adjust idle timing screw in and out until it smooths out. Then after 15 minutes is works fine and runs fine all day. I run 40:1 with 91 octane fuel. Now the rough running spreads all the way through the rev range except idle. Yamaha does not specify a test procedure to compare fuel pressure to manifold pressure. squeeze the bulb and pay attention to the fuel pump. May 24, 2014 · With the motor running at idle speed the fuel rail pressure is supposed to be approximately 36. Motor is hard to start and when running at idle,the exhaust has a strong gas smell. Jun 15, 2018 · The tell tale stream is very strong at all rpms. It comes with a 0 – 200 Mar 28, 2006 · The problem is the overheating alarm goes off yet the motor is not overheating. I didn't change the water tube grommets, thanks for that idea. He never really used it with the "new" motor. Hits plane then crawls down in rev range. 00. in your case buy a service manual. Apr 2, 2017 · The boat is a 1989 18' renken sea master (center console) with 1987 (ETLH) Yamaha 2 stroke 115hp outboard. ago. Starts up pretty easy. This engine has been running very rough. He put it on the boat and said it never ran right. Using Sep 3, 2006 · You have to constantly re-adjust the air screw to compensate for changing outdoor temps and humidity. No problem. Hi all, I am new to the forum and have a 2002 Yam 115 EFI 4 stroke on a 02 hurricane 19 ft deck boat. Before, when it was running rough and rich, it would run 32MPH and had little trouble reaching plane. Nov 21, 2017 · Hi forum, picked up a DT175 US import recently and have had a sudden loss of power, harder to start, wont rev above 3k. To confirm that, you need to measure the fuel pressure at the VST fitting or you need to get an adapter that sits between the fuel rail and the VST. that was more than i was quoted but if it was Nov 28, 2019 · hi guys, so bought a blown up yamaha 115hp 2 stroke ceto motor for my boat, after looking into the engine damage ive decided i want to bolt my running yamaha 115hp 2 stroke aeto motor into the ceto chasis. I have a four stroke 115 that idles great but when you go to accelerate it stalls. Unfortunately it hasn't seen much use in the last 4 or so years, only the garage. Jun 2, 2023 · Boat owners who have been using a 2 stroke outboard engine might sometimes experience a power loss when running their boats at full throttle. Sometimes it starts back up, but I usually have to wait for 15 minutes for it to cool down, then it will start and I can run it at idle to get home. start it up, give it a touch of throttle, then be on my way. Needle is on the second clip down. The most obvious symptom of the problem, is a change in the sound of the motor while cruising. The bike runs exceptionally well. Apr 13, 2013 · With a 2 stroke all you're worried about is fouling plugs, so, back the idle mix out 1 1/2 and then another quarter turn, in other words run it rich. We had slowed to turn around, took off again raised RPM to about 4000RPM to plane off and alarm goes Jul 26, 2019 · I have a problem with running things rich, and am confused. Also it will not rev to max rpm's unless it "surges" occasionally while running. Running rich is usually not an issue. They do have small bleed passages across them to allow a tiny bit of water to flow. This 115 hp Yamaha outboard engine is ready to bolt on to your boat. Then look at the right side of the engine with the key on having someone pull up on the choke switch--looking at the choke solenoid. Took it to monterey bay marine in santa cruz ca. 1 to one air to fuel. Gas-powered boat motors require a precise mixture of fuel, air/oxygen, and heat. Under power, it is smooth and strong up to it's maximum 5200 rpm on my 17' Boston Whaler Montauk. It smells rich and shows some traces of gas in the water. Do you have the manual on motor. 5 plus or minus . It has been in the shop for 2 years and the mechanic has May 24, 2010 · I recently purchased a 19' Arima Hardtop. The two o-rings that seal the expansion chamber to the cylinder wear out really quickly and are cheap to replace. I'm having a hard time getting it jetted correctly. Anyone Jan 22, 2015 · I have a 2006 2 stroke 25 hp. I am running Mohard radiator guards with outside temps in the high 70s to low 80s at an elevation around 800 feet. 05-25-2020, 05:11 PM. Takes the boat out to see what happens and after 5 minutes, the alarm goes off. When I’m running full throttle it starts acting like it’s starving for fuel off and in for short intervals. Jun 23, 2014 · First I am new to this , so if I ask a dumb question, humor me. Furthermore, Its lightweight design combined with 1. I am only getting 1 mpg with a Yamaha Power V 115 two stroke. As you say, the idle A/F screw simply allows more or less of the FIXED A/F mix into the intake. Aug 1, 2013 · Re: Adding temp gauge to Yamaha 115 2stroke 1998 Most on people would add a water pressure gauge on a 2 stroke before a temperature gauge. While the engine was running rough between about 4300 rpm and 4600 rpm, timing fluctuated between 19-21 BTDC. May 30, 2023 · Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. they say it needed a high pressure fuel pump and injectors cleaned. I have had the boat for about 4 years and it has never idled quite right (stalls when coming off high RPM) Jan 23, 2016 · Been studying the Yamaha carburetor as you suggested. Running vinegar thrugh to pee tube will break up salt deposits inside the block. motor back together and it seemed fine. 2 MPH at 6,000 RPM, turning a 20” 13-⅛” Talon SS prop. All 8 plugs black fouled, dry, no oil. Might get a few more participants here but it's pretty much the same people reading thru all sub-forums. Having the correct ratio of two-stroke oil added to your fuel is important if you want to maximise the life and performance of your machines. It is more gasoline than it is air. Once it's warm the problem goes away completly. Mark the throttle grip at 1/4 and 3/4 openings. Your engine's monitoring system will throw up a buzzer if there is a problem with overheating. Sucking air (o ring), restriction or bad thermostats are usually the problem. Today I took it onto the water for it's first cruise. I don't get how you can close only valves #1,2 without closing #3, 4. Jan 20, 2016 · It surely worked this way on my Mercury 25 HP two stroke with a Tillotson carburetor. look at the wiring diagram. We ran down the lake about 10 miles. I have changed my fuel tank, fuel line, fuel connector on motor and fuel filter due to the o rings being messed up. If I leave it to cool for a Jun 13, 2009 · Since the engine has never had a tune up I brought it to the Yamaha dealer and had them check the lower unit assuming this is where the oil had come from. I read up on adjusting the pilot screw and according to my manual, it says that all four should be anywhere from 3/8 of a turn to 7/8. Is 32:1 too rich? I get lots of white smoke and am susceptible to fouled plugs occasionally. I had recently installed waterpump kit, thermostats, cleaned poppit valve, fuel/separator filter. Running without the thermostats is one way to check them but be sure to replace them. I just wonderd what it was thats all, goes well enough. I have been trying my best to blow up a 1994 130 for two years now. After a long storage, both motors were fouling plugs. Carbon buildup can be a potential problem if a Yamaha 115 is operated solely at low RPM’s. Pull that plug and check. Tried adjusting the air/fuel mixture, engine Nov 13, 2016 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. It does great on dry land when you rev it up but not under load. Here are 10 reasons and fixes to help prevent lack of fuel to a 2-stroke engine. This is a minor potential problem and it can be solved by simply opening up the throttle and letting the outboard run. Nov 7, 2007 · Re: 2002 Yamaha 4-stroke 115hp Hi, sorry dont have any answers for you, however i have had a "simular" problem with my f115 - during the first 10 mins of operation the engine will miss and sometimes stall completly. Today after operating without issue for several hours the motor just cut out at midra 2014 Yamaha 115 cutting out intermittently - KEY WEST BOATS FORUM You can support the channel by using the Amazon Affiliate link when making purchases:https://amzn. 6k rpm wot and 30kts which is slightly better than it did before head gasket. next would be a complete rebuild of Jul 21, 2013 · 1997 yamaha two stroke 115 Was running great. been running without any issue until this weekend. I dropped mine 1 mm to 6 mm. I have a similar problem with a 1993 200 2 stroke. The engine is not reaching sufficient temperature to burn the oil/fuel/air mix completely, producing the oily bi-product "spooge". I picked up this yz250 a month or so ago. Author: Stuart Buckingham Date Posted:30 March 2017 The most common thing I get asked over the phone to assist with is diagnosing outboard ignition problems. I cleaned/re-built the carbs with the yamaha carb kits and installed a 30GPH Racor fuel water separator. Sep 9, 2018 · I have a 1998 Yamaha 115 outboard 2 stroke that runs great on dry land. Jun 19, 2011 · 115 HP Yamaha 2006 fuel injected 4-stroke At Trinity lake, 3000 ft elevation. Apr 9, 2019 · Actually 2, a F115 and a LF115. If you have certain Yamaha tachometers (or maybe lights on the motor or on the dash) the lights will illuminate or an icon will flash. The motor is 1998 c115. When a 2-stroke Yamaha outboard motor is not performing well, it is mostly related to a power loss issue. This will make your good running 4 stroke into a very poor running 4 stroke. I first found that the motor was making oil (more oil on the dip stick than I had put in). not all yamaha's sound a buzzer for low voltage. Jun 5, 2012 · Re: How to tell if running lean, or rich? Eric, Running lean will cause heat and can cause damage. If turning the idle mixture screw in a 1/4 turn makes the motor idle better, or you feel better, you are free to do so. Did a compression test last week all 3 cylinder were 115-118. 4k rpms. It's got an fmf fatty pipe and shorty silencer and be force 3 reed cage and reeds. The problem I'm experiencing comes in "slow speed zones", where the motor is running at 1600-1900 rpm. In addition to top speed, it features tech that is unheard of in other brands. Recently changed the fuel/water separator. Nov 26, 2019 · Head gasket leaking/blown. Thanks! I have an intermittent issue with my 1995 Merc 115hp outboard. I was a little disappointed as it seemed to be down on power. 2) Faulty Carburetor. I have to let the filter for my YZF sit out overnight when I use Maxima FFT so the carrier can evaporate off. I received a call a few days later, the carbs and entire engine compartment was full of 2-stroke oil. I rebuilt the carbs a fuel pump 3 months ago. Today at the end of the day it started to die while it would be idling. The trick is to keep fresh gas in your boat, and treat any gasoline that's not going to be used in 2 weeks. Mar 27, 2020 · My 2012 Yamaha F115 just started acting up in a way I haven’t seen before. We had ran about 5 miles at 3000-3500rpm. They should pull up and down with the switch. I think the problem is that it is running rich, but I don't know for sure. Let me start off, I'm a new rider and i'm still scared to move the much throttle except for short blips. Nov 2, 2022 · Reason 2: A Faulty Carburetor Is Holding the Engine Back. Apr 18, 2017 · I have a 2004 Yamaha 150 TXRC 2-stroke carb outboard on a boat purchased at the begging of the season. Apr 23, 2009 · All of my search term words; Any of my search term words; Find results in Content titles and body; Content titles only Aug 9, 2011 · My 1990 Yamaha 115 2 stroke is spitting oil from the prop, quite a bit see attached photo. Dec 10, 2019 · 2003 Yam 115 2 stroke Runs Great EXCEPT: It will not start after running 30 min. Smells like gas/oil mix which makes me think I am just running too rich, but I have oil injection. Sometimes it’s just a simple screw or loose wiring causing all the trouble. is this possible to?? and are there any 2000 Yamaha 115 2 Stroke Wont Idle Under a Load I never did not see if this guys issue got resolved. Is this coincidence or could that have caused the issue? Maybe jump timing? I've checked water filter and first filter coming into the motor and both were fine. When there’s an imbalance of these elements, the motor may fuel with an excess amount of fuel. I taped the primer bulb in a almost vertical position and the engine will not even plane the boat it is running so bad, When i lay it down horizontal in the well it runs fine but will still stall at Jul 18, 2012 · To all, Please help, I have a 2008 F115 Yamaha four stroke with 345. are good. May 21, 2019 · It's a long story. I thought I had figured it out but now have doubts. Mines 1 1/2 but does the same thing your describe I turned clockwise 1/8 to 1/4 and it runs way better all out. If your 200 hp Yamaha fuel-injected 2-stroke outboard engine is only reaching 10 mph at full throttle, several potential issues could be causing the problem: 1. The sound change is best described as a lower pitched droning Jun 6, 2017 · Hello, I just purchased a used 1985 115 Yamaha outboard (model 115ETLK) with precision blend oil injection. Now, it's time to work on the needle. However, like any mechanical device, they can occasionally encounter issues and require troubleshooting. Jets are the stock 178 and 50, just brand new ones. 66 hrs run time! new plugs no change. Jul 11, 2011 · Re: Yamaha 115 2-stroke (1999) running on 3 cylinders at low rpm Re: Yamaha 115 2-stroke (1999) running on 3 cylinders at low rpm check fuel pump diaphragm. Only after draining the water that completely flooded the boat from bilge to 3 in up on deck. I bought myself a new to me 2002 yz 250. I recently bought a 2000 Yamaha 4 cylinder 2 stroke outboard 115 hp model C115TLRY using 50:1 premix into twin carbs for my 18 foot Sunbird cuddy. Customer: I have a 2002 yamaha 115 hp 4 stroke outboard that stalls when you pull it to idle from high speed, not all the time, just now and then. Turn out, ran fine. Most sizes were phased out by this time, i know most bigger Yamaha's were already phased out by 2009 model year. I tested the electro-thermal valve for resistance and movement. Bit if background, it did have a badly rusted tank, cleaned with hydrochoric acid which worked well (but surfered some flash rusting), it then ran really well as long as fuel wa Dec 4, 2012 · Okay- so I finally got the little bike up and running. 2001 SX225 OX66 Sep 13, 2020 · My motor run great from idle to wot for about 10-15 minutes, then starts cutting out. BTW - the idle mixture setting will never cause a motor damage. Apr 7, 2019 · This engine was actually purchased new in the crate in 2011, spring of 2011 as the last on 2 new Yamaha 25hp, electric start, short shaft, tiller handle engines. So th May 10, 2014 · Hi All, I have 2002 50hp Yamaha (pre mix version). Feb 6, 2012 · I have a 1996 Yamaha 115 2 stroke on my boat. Opens in a new window or tab 1996 Yamaha 115 HP 2 Stroke Outboard Cylinder Head Set G3 Boats, a brand under the Yamaha umbrella, has carved a reputation for building dependable and feature-rich boats. 1. For the first few months it was running fine, but then started rough idling and stalling at idle. I've searched and read the FAQ section but I'm having trouble here. I can also see a gas-sheen Sep 3, 2012 · My 06 Yamaha 115 4 stroke started running off tune at wot last season. Could also be a sign of weaker spark but I would first try fuel solutions. If I clean the plugs they run again for same amount of time, clean, repeat. Yamaha would not provide a torque curve graph for the SHO 115. I'd start by making sure the fuel line, bulb, filters etc. 0 hours on it from new. When you put it in the water--it idles great, but will not rev up and run as it used to run. . Feb 12, 2023 · If anything ask a moderator to move the old one to the make/model specific sub-forum (Yamaha 2-stroke) so we can continue here. if you notice any gas coming out from it you either buy a fuel pump kit and rebuild it yourself or you buy a new pump. NOTICE: Running out minute display will begin blinking. It only did so when my friend moved to the front. The fact that i have white smoke coming out all the time confirms its too rich. Fixed carb jets can get clogged and cause this condition. A bog in your carburetor occurs when you suddenly lose power or acceleration, making it difficult to control the boat. Sep 2, 2013 · My 1998 Yamaha 2-Stroke starts easily and will idle and ***** all day long. Carbs have been rebuilt also replace fuel pump diaphrams and gaskets and reeds have been inspected. Lifts the front in the first 2 cogs, on throttle and in third with a tug on the [July 2018] 2007 Yamaha 115hp. I have been running BR8's in our trail ridden YZ125's that call for BR9's for about the last 1. today we dive in to find the culprit of a outboard running really crappy, and the outcome really surprised me personally but was super simple and maybe simpl To test the low oil quantity system in an oil injected two stroke simply drain the oil from the main engine mounted tank. It would not even plane off with two of us in the back. Dec 12, 2017 · I don't understand how could it be possible to open only #3, 4. Rough running 2 stroke yamaha stroke May 14, 2001 · Re: 115 Yamaha Overheats only at high RPM These are simple systems really. To the point that they would start to miss after about 45 minutes of cruise running, 4000-4500 rpm's. As the throttle opens the manifold pressure rises and so too should the fuel pressure. one turn out. I had thought it was the oil gauge assembly not sending a low signal to the pump. Fuel pumps are a good idea to replace on an older used May 17, 2007 · i was reading the sticky thread about how to tell if your bike is running rich. to make it short, this is what the boat looked like not too long ago. Get your plugs at auto parts store, about ten bucks for four. Could it be plugs or air in the line? Any suggestion would be greatly appreciated. If I 'throttle down' to WOT, it'll typically just seem like it is tied to an anchor and hold at about 3800. Propeller Damage or Incorrect Size: The propeller could be damaged, have a bent blade, or be of the wrong size or pitch for your boat. They can answer questions for any Yamaha outboard model or horsepower. It’s makes type of surging idle sound and idles rough in a way that sounds like a lot like a two cylinder two stroke Outboard. kwyr rzawlyni qaa meq vfulk zav hanbi hwajjry tfyoyfa vkfus