Yamaha outboard stalls at full throttle This repeated over an over so they turned back and limped home. May 21, 2012 · I have a stalling 2001 YAMAHA F115 four-stroke. cutting power down rapidly when approaching the dock. If it stalls or I Outboard stalls when idling or at low rpm, no issues at higher rpm or full throttle. Nothing is worse than getting your boat ready and getting down to the launch and you cant get on plane. Gradual throttle sputtering may indicate intermittent ignition or fuel supply issues. The short version is: Starts up and idles perfectly every time. Customer: Yamaha 50 HP 2-stroke outboard It stalls while idling and won't reach full speed even with the throttle fully open. A bog in your carburetor occurs when you suddenly lose power or acceleration, making it difficult to control the boat. Are you wondering, “Why my outboard will not throttle up?” This post clears up the mystery and identifies the exact problems. Test ran it in front of the harbor, full throttle and it stayed on. Feb 7, 2023 · Boat Bogs Down During Throttle Acceleration: How To Fix A Boat Carburetor There is nothing more frustrating as a boater than having a bog in your boat’s carburetor. I bought the motors used so I had to perform much Jun 15, 2013 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. I checked the water separator filter and it was clean , oil level was good. I have found and read most of the issues on the Idle Speed Con*****er issues. Engine seems to idle smoother. If your outboard engine is sputtering at any speed, idle or full throttle, it could be the result of several common malfunctions. Jun 8, 2021 · I have a 2017 300hp Yamaha 4 stroke that runs fine when you nail it hard on acceleration or cut the throttle fast to decelerate, but always seems to cut out when you do either slowly. Collected fuel from the VST drain and it was clean/good. Suddenly, your outboard motor sputters, loses power, and leaves you adrift. But it May 15, 2016 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. She get's up on plane surging around 5,000 and then slowly dies off. We provide fast shipping and inexpensive shipping. ) I saw a similar forum discussion on this site between users High Sierra and rodbolt17, but can no longer access that thread. I’ll also Your outboard may be stalling for several reasons. Carburator has been rebuilt, and new fuel pump installed. 1K subscribers Subscribed Jan 3, 2005 · 2019 Yamaha 200hp 200 hours on it Running full throttle yesterday and 2 hours in it just shut off. Apr 15, 2015 · SIM Yamaha is a USA Yamaha outboard motor and outboard motor parts dealer. Oct 23, 2022 · Struggling with Yamaha 4 stroke outboard idle problems? Well, your difficulty ends here. Oct 15, 2007 · Re: hesitation/stalling on slow acceleration I own a 2006 Yamaha 25hp, 2-stroke that experiences the same condition as you. Aug 7, 2012 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. 9 4-stroke I bought with my Mac 26D 3 years ago. Aug 29, 2014 · I need help diagnosing problems with my 1999 Yamaha T9. Two weeks ago coming home from Clemente I Sep 11, 2018 · Need some advice here. To start it I then need to pump the throttle once or twice and it starts right up. Sep 10, 2002 · Re: outboard stalls when advancing throttle past idle speed Jefferson,just went thru problem like you with 150 Merc, put in new set of NGK plugs and it fixed problem for now. Here's a summary of the current symptom (a list of actions previously taken follows at the bottom). This prevents common issues and ensures smooth performance. Carburetor Linkages: Check the carburetor throttle butterfly linkages that lead from one carburetor to the another to Jun 15, 2010 · Re: Yamaha f115 4 stroke rough idle and stall Thanks for tyhe quick reply. May 17, 2024 · To troubleshoot your Yamaha outboard, refer to the manufacturer’s troubleshooting guide for specific issues and solutions. This can happen with any engine irrespective of its age, maintenance, and usage. Get back on the water hassle-free with our expert tips. I got me a Johnson 1991 15 hp 2 stroke today, the spark plugs have not been changed in a few years and the engine was sitting for a while. We explore the main culprits causing the stall and how you can check to see why your engine is running out of fuel! Why does my outboard stall? Your outboard may be stalling & running out of fuel due to three issues. (serial # indicates: 1988) Starts and idles fine, put throttle 3/4, then to full, it takes off normal, good jump, then 10 to 15 seconds later, it slows down and runs rough, takes about 15 seconds to recover, then idles great again, put into gear again, same 3/4 throttle and then to full throttle, after 10 - 15 seconds, it repeats the slow May 22, 2016 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Particularly when you're docking and needs to get the throttle up quickly and briefly to pull away from banging onto the dock. Disclaimer: This information is AI-generated and intended for general guidance only. cruising at 4,500 rpms, it will all of Aug 21, 2023 · The reasons given include their reliability, top-end power efficiency, low noise levels, and Yamaha spare parts’ availability from dealerships and local service centers. 2 hp outboard - Dies after 5 mins k25824 Engines and Propulsion Systems 10 01-10-2016 10:45 Mercury 9. YDS shows no codes. Sep 12, 2023 · Yamaha 2 stroke outboard bogs down at full Throttle when some issues like overloading, faulty ignition system and faulty fuel system exist. 1990 Mercury 25hp Bogging down at full throttle and pulsating. I also cleaned the carburetors. 2. I am a reasonably good mechanic, but Sep 8, 2024 · To fully appreciate the potential of your 2-stroke outboard engine, addressing and resolving the issue of incomplete RPM is paramount. Added fuel stabilizer, pulled about 5 gallons of water out of the tanks. We have a 2006 Parker 2520 with twin 150 Yamaha 4 strokes. In another instance after running at nearly full throttle it started cutting out intermittently. Oct 12, 2024 · Picture this: you’re out on the water, the sun is shining, and you’re enjoying a perfect day of boating. SIM Yamaha also sells Yamaha outboards at discounted prices. In this blog post, we will delve into the … Addressing Yamaha 25 HP 4 Stroke Outboard An outboard engine usually idles a lot lower in gear, than when it is in neutral. I remember a particular fishing trip that was nearly ruined when my outboard refused to idle at the dock—running perfectly once underway but stalling every time I tried to slow down Jan 9, 2025 · Why Your Outboard Motor Isn’t Running at Full Power If you’ve noticed that your outboard motor isn’t running at full power, it can be frustrating, especially when you’re out on the water. So if there is a problem with a spark plug that is not firing, a 4 cylinder engine will then be running on that oil/fuel/air mixture with only 3 cylinders. Step-By-Step Guide on How to Diagnose the Issue of a 2-Stroke Outboard Not Reaching Full RPM Diagnosing why your 2-stroke outboard isn’t hitting full RPM can be a step-by-step process. . SIM Yamaha carries Yamaha OEM discounted engine parts and Yamaha maintenance parts and accessories for Yamaha outboard motors. Aug 21, 2023 · Troubleshooting Outboard Idling Problems: A Comprehensive Guide for Smooth Performance. it continued to shut off randomly then it went back to normal operation a few miles from the harbor. Oct 5, 2018 · (Hesitation/Bogging On Applying Throttle) (Joe Reeves) This is a common problem and is usually caused by a sticking timer base under the flywheel or fouled, clogged carburetors, however… also check the carburetor linkages, compression, spark, and the timer base as follows. Hi everyone from the UK. It seems to happen in the 2000 to 2900 rpm range. We recommend that you locate or download the repair manual for your specific engine for more information, and consult a certified mechanic over any uncertainties. An underperforming motor can affect your boating experience, whether you’re trying to get to your favorite fishing spot or cruising around. For million $$$ sponsorships (or just Nov 20, 2010 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. There have been different issues and problems through the summer. This happened as I was coming into the no-wake zone so I . Check out this article to know how to get all the idling issues solved in a jiffy. Jul 30, 2019 · hpdi 150 stalls at idle and won't run over 3500 rpm Posts Latest Activity Search Page of 1 Outboard Not Running at Full Power | Boat Slow at Full Throttle | Boat Won’t Accelerate | Boats. My 2014 25hp 4 stroke bogs down at 1/2-3/4 throttle. Sep 29, 2020 · Hi all, Purchased a used 2000 F25 TLRY 4 stroke that had been sitting for awhile. Jul 24, 2021 · Sandero Engines and Propulsion Systems 14 15-08-2016 19:05 Outboard dies when throttling up from idle bstowers Engines and Propulsion Systems 42 14-05-2015 08:32 My Diesel Starts - Then Dies Immediately Pubsnub Engines and Propulsion Systems 9 04-09-2012 11:00 Starts, Idles, then Dies + Stalls on Takeoff - YM 1GM10 nickj Engines and Propulsion Systems 16 18-07-2009 02:13 Recent Discussions Dec 12, 2017 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Mar 12, 2021 · 2005 F200, runs up to speed fine, easing off the throttle is fine but if I rev it up and drop the throttle fast the engine dies. outboard that cranks and runs fine at idle or low rpms but when I increase throttle and boat to plane it stalls and shuts off, then is very hard to crank, if it cranks at all. net Boat Parts 57. i. But sometimes an outboard motor idles but bogs with throttle or acceleration. The engine was running perfectly until a month or so ago. As soon as I advance the throttle it bogs down severely, almost dies, but just barely stays alive, and then runs mostly fine all the way up through WOT. Cruising along at 4,500 rpm on plane and anywhere between 5 mins and 30 mins the starboard engine starts dropping rpms. When an Nov 30, 2010 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. 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 Aug 8, 2024 · I have a 2019 C302 Coupe with twin Yamaha 300 outboards. A quick guide to potential Yamaha 115 4-Stroke problems, pros & cons, and troubleshooting. However, like any engine, problems can arise over time. They each have 450 hours on them and until recently ran flawless. com Sep 9, 2019 · However, engine begins to misfire and eventually stall shortly after full throttle, and about 5200 rpm. Aug 4, 2010 · Re: 40hp yamaha - starts and then stalls So, what is the motor doing that you think is a problem? How do you normally start your motor? Do you advance the throttle any while starting? how old is the fuel? have you done all this carb cleaning (3 times)in the last week? how did you clean the carbs? did you check the diaphragm and check valves in the prime start pump and clean the passages in it Reduced Power at Full Throttle: A weak or failing fuel pump might not supply enough fuel, causing your Yamaha outboard to lose power at full throttle. No chance of keeping it running once it starts to die. It starts up fine, 2nd or 3rd pull. When it stalls out, it will start up immediately. I had similiar symptoms trying to out run a thunder storm, as engine bogged at 5000 rpms I inadvertantly glimpsed at my bulb which was flat as a pancake, as I deccelerated the bulb began to take its shape allowing gas to pass through which enabled my engine Ever what you should do when your boat motor loses power at full throttle? Have no fear we go over exactly what to do in this situation. The problem: Bogging/stalling Is your outboard jon boat motor bogging down or losing power? We will talk about the most common items that cause this. Must be something in common with both 2 and 4 strokes?? I just ordered a set of Boyesen reed valves (not used on 4-strokes of course) in hopes of correcting the problem. ran the gas thru a 2 micron filter and back into the boat. Jul 4, 2007 · This is sort of a heads up to other Yamaha owners so they don't go through the troubles we did to solve a power loss issue. Jun 2, 2025 · Why is my outboard motor not running at full power? If your outboard motor will idle but not accelerate or bogs down at full throttle, it’s likely due to fuel delivery issues, spark plug failure, or propeller obstruction. 1. -- VST hi-pressure pump filter is clean -- Spark plugs appear all similar in color - dark brown, slightly black We would like to show you a description here but the site won’t allow us. It stalls as the throttle is applied just after you have put it in gear. We would like to show you a description here but the site won’t allow us. Engine will run at about 2500 rpm. Some history. May 28, 2012 · Re: Yamaha F115 '05 4 stroke random stalling problem check your low pressure fuel pump I had the same thing happen to mine turns out the spring broke and would sometimes make the diaphram work and sometimes not. Difficulty Starting: If your engine struggles to start, especially after idling for a while, it could indicate a fuel pump problem. My Mercury outboard was bogging and stalling at almost full throttle after about 10 mins of runnin Jun 5, 2012 · Re: 200 hp bogging down at full throttle From personal experience I would check the primer bulb at high speed to see if it flattens out. 1) engine has trouble starting and won't run at idle speed Jul 10, 2016 · I have a Yamaha 25HP 4 stroke that cranks easy and idles pretty smooth, but when you give it throttle, it starts sputtering. Idled out to the ICW. Jun 16, 2013 · Re: Yamaha runs full throttle, stalls at idle I can't tell you specifically what it is, but it sure sounds like a lean condition on the low speed or idle circuit of the carb. However, while the Yamaha 250 outboard has many fans, there are a few problems to look out for: We would like to show you a description here but the site won’t allow us. Nov 2, 2018 · History 2001 Yamaha hpdi with 500 hrs. Definitely feels fuel related. Aug 30, 2011 · Yamaha 9. Here are 9 common reasons why an outboard dies at idle: Carburetor issues Idle settings not configured Water in the fuel supply Clogged fuel tank vent Malfunctioning idle air control valve Fuel system issues Faulty spark plugs Fuel injection issues Damaged thermostat Keep reading for an in-depth analysis of the most common causes of problems that make your outboard motor stall. 34 psi. We are We would like to show you a description here but the site won’t allow us. (i. Especially the ‘rodbolt’ adjustment for the TPS and butterflies. Both filters changed and squeezing fuel bulb wont help. Nov 27, 2017 · Motor will do great starting, idling, and running until pushed towards WOT then will drop RPMs over time momentatily then regain them until eventually "bogging" down completely and running full throttle gives me roughly 10MPH. It also stalls when you quickly come down in RPM's. Apr 27, 2025 · Maintain your Yamaha 2-Stroke Outboard with regular checks on spark plugs, fuel lines, and water pump. So many things can go wrong on a boat but here are a couple things to check especially if Jan 29, 2015 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. My 2003 F225TXRB runs great at low speeds but bogs down and stalls when you give it full throttle. 9 stalls at idle and low throttle - please advise by romandesign » Mon Jun 18, 2018 4:16 pm Last season I had a problem with my 1989 Yamaha 9. Either the lift pump has 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. It became very unstable at idle and low throttle - sputtering and stalling unless I give it a little gas. 9 would run beautifully at full throttle but utterly fail at idle. At low throttle, I have run the motor for 40 minutes with no problems. When this occurs, it is usually due to a problem of power generation from the outboard motor. This guide to troubleshooting why your Yamaha outboard motor stopped working addresses issues common to the majority of Yamaha outboard models. Video and troubleshooting tips on how to quickly diagnose problems with an outboard motor that wont idle. Understanding the common problems and their respective fixes will help you address any technical difficulties you may encounter. Put the removed gas into my old jeep and it ran fine. Good compression and spark on all four cylinders (at idle at least) Fuel pressure about approx. Jun 7, 2013 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. removed about 25 gallons of gas and replaced it with fresh gas. I have cleaned the fuel filter, the carberator Aug 29, 2019 · I am having 2 issues with my F250 4 stroke outboard. To solve the issue you must replace the jets. I say mostly because I have May 23, 2010 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. 9hp Outboard Won't Idle Bay Sailor General Sailing Forum 9 02-11-2015 12:39 Engine dies at idle pinball Engines and Propulsion Systems 8 05-06-2014 18:47 Honda Outboard Idle question Sea Maid Engines and Propulsion Jun 1, 2005 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. (I'M NOT A MECHANIC VIEW AT OWN RISK) Outboard engine bogging/sluggish at high RPM - Common cause Sep 18, 2016 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Learn how to diagnose and resolve common idling issues in your outboard engine. 3. Jun 12, 2023 · As every boat owner knows, outboard motors are an essential part of the experience, ensuring smooth and efficient performance on the water. Jun 26, 2023 · How to Fix Outboard Motor Stalling in Gear When Troubleshooting Fails to Work If you've tried all the troubleshooting tips and your outboard motor is still stalling when you shift into gear, it's time to take it to a professional mechanic specializing in boats. I have replaced all fuel filters, hoses, bulb and drained the carbs and sprayed carb cleaner. Sep 14, 2018 · Installed new water separator and engine mounted fuel filter. They can answer questions for any Yamaha outboard model or horsepower. The following are the reasons that can cause your outboard motor to bog down at full throttle: 1. e. Mar 30, 2014 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Mar 20, 2015 · Replies Last Post Mercury 2. It runs fine for a while, maybe and hour or so, then I start having lack of power, in on instance I could barely get the boat up on plane, then when I eventually did it seemed to run ok. Diagnosing a Mercury Mariner 60hp 2-stroke outboard that won't rev out or accelerate If you own a Yamaha 25hp 4 stroke you may experiencing acceleration issues and this is a factory defect. From cold, the motor starts easily and I have to push in the choke right away. This includes performing well at the idle mode and also performing well when throttling or accelerating. The cure is a matter of diagnosing and cleaning the element although in some cases replacement is required. Luckily for boaters, this problem is common and easy to fix. Aug 26, 2023 · -- I did not try holding the throttle handle WOT so long as to see if it would eventually stall out Notes: -- Fuel is clean (use Startron and RingFree religiously). Among the leading outboard motor manufacturers, Yamaha stands out for its reliable and innovative products. Discover steps to check fuel system, ignition, carburetor, idle speed, air intake & compression. Going to replace plugs before I take it in to a mechanic. Oct 11, 2021 · I have a brand new Yamaha 4hp 4 stroke outboard, but cannot run it at full throttle. Nov 9, 2008 · Re: f225 yamaha stalls on acceleration I don't know if this will help you, but I was following a thread from another board about a Honda 130 EFI with similar symptoms and this is a what was causing his problem "I mentioned the missing Honda outboard and described the symptoms and he goes, "I know exactly what it is". HELP!!!!!! As a boat owner with over 15 years of hands-on experience maintaining outboard engines, I've faced that frustrating moment when my Yamaha 9. Each of these issues restricts performance under load and needs to be inspected and resolved. You may need to make a few timing adjustments or replace a spark plug, or you may need serious mechanical inquiry. Jul 26, 2009 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Jun 18, 2018 · Last season I had a problem with my 1989 Yamaha 9. Had old gas in the tanks (almost 200). It became very unstable at idle and low throttle - Jul 25, 2019 · I spent the last couple of hours taking apart and cleaning the carb on my Yamaha 6hp 2 stroke. Oct 17, 2005 · If I reduce the revs it slows and then stalls. Mar 5, 2012 · Well it's back at it, I have a 2005 Mercury 60hp 2-stroke 3 cyl. Yamaha, Suzuki, Honda and Mercury four-stroke outboards are the most susceptible. Interesting thing, after this happens, 1,000 RPM idle will cause it to stumble and surge. Jul 21, 2014 · I have a 90 HP Yamaha engine ( 90ETLG ) jet drive. By the way a Yamaha dealer told me that this engine requires as part of the starting procedure that the engine be put in gear, and the throttle opened and closed fully five times before running the starter. I have replaced the spark plugs and fuel filter. Dec 23, 2020 · Yamaha F150 idle and stalling 12-23-2020, 12:20 PM F150a Production date 07/12 136 hrs run time. Regular maintenance of coils, carburetors, and spark plugs ensures smooth acceleration and prevents stalling during partial throttle. Mar 31, 2024 · Hey all, posting to get some help troubleshooting a 2006 Yamaha 115 2-stroke. Jul 11, 2021 · My 2013 Yamaha F40LA starts and idles fine. Here is a possible reason for outboard motor bogging down. Before, it would immediately stumble and surge around 2800 - 3200 RPM's. 9 outboard. Going to try to give as much info as possible. Recently I've been having issues with the starboard engine losing RPM's. It’s a scenario that every boater dreads – the frustration of an outboard motor that was running smoothly one moment and then inexplicably loses power This sudden reduction of speed or bogging down of the motor can happen at any time during the operation, but it is more prone to occur at full acceleration. Within 30-60 seconds of accelerating to medium/full Jun 2, 2025 · When your outboard will not throttle up, there’s plenty you can do to fix the most common issues and improve performance once and for all. With a 4-stroke, it may be a timing/advancement problem?? This is my first outboard, so I am very much Jun 24, 2013 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. I can run it at various speeds for an hour or longer but if we stop and float I can't either restart it or I have no power and it stalls. 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 Dec 7, 2011 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Sep 12, 2023 · When an outboard motor is functioning well, it will be able to perform flawlessly at all modes of usage. See full list on longlifesport. I have a 200 Yamaha 225 outboard motor that stalls when u take off full throttle ,but if u peddle into it it takes off - Answered by a verified Marine Mechanic Jul 12, 2016 · It will run fine for a while but after about 200 yards at full throttle it chokes and the motor starts shaking violently as it drops down to what one shop called a limp mode. div vgnj nemlng nzgt wmunpan cawj hbcb esma yoqmp bwtebr riuqoef ltmcu gyixyr tjtn ojf