I can idle (sometimes it's rough) and putt around, but the engine stalls when I accelerate above 5-6 mph. I have the same problem with my 1993 150 hp suzuki. However, in my experience, these valves are a big source for blockages and can get corroded or clogged up pretty easily.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'bornagainboating_com-leader-4','ezslot_23',113,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-4-0'); The second most common location for blockages is going to be on the bottom of the fuel tank pick up. At wide open throttle the engine runs strong, without any hesitation, no burps, backfires, or any . How Fuel Supply Modules & Vapor Separator Tanks Operate! Same problem, go only 5mph try to go faster it dies . (7 Reasons)if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-medrectangle-3','ezslot_13',102,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-medrectangle-3-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-medrectangle-3','ezslot_14',102,'0','1'])};__ez_fad_position('div-gpt-ad-takeocean_com-medrectangle-3-0_1');.medrectangle-3-multi-102{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:15px!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}. Options. To enhance the performance of your boats engine and prevent problems arising while out in the waters, you should always perform constant maintenance. Request The Next Technician's Tuesday Video Topic. For a better experience, please enable JavaScript in your browser before proceeding. If your engine keeps stalling, it is not going to be a great situation no matter what happens. Problems with the delivery of any of these combustion components can cause an engine to stall while under acceleration. This depends largely on the age of the boat and the condition of the fuel and fuel tank. Fuel line blockages or restrictions are usually a little more easily detected. It may not display this or other websites correctly. Check the gap on all the spark plugs. And still, experience an engine running out of fuel. Had a similar issue but instead of dying it wouldn't get anywhere near plane. Has a hard time getting up to speed. It's not introducing water to the fuel tank. Quick diagnosis showed the problem and was a simple fix. Tables, Minn Kota A closed or blocked air vent on the fuel tank. These are common questions for those who love to boat, only to suffer from poor performance from their outboard motor when out on the water. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. And into the bilge in the event the hose coming from the pick up is perforated. And if you would like to support us to continue bringing you great content, please click the link below to Amazon where we get a commission from anything you are already going to buy! Covers, Boat Shrink Wrap When your engine starts to stalling, you will not have a great situation irrespective of what happens.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'takeocean_com-box-4','ezslot_4',103,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-box-4-0'); Irrespective of the size of your boat, engine stalling is a big concern while you are in open waters. So, if you notice the primer bulb is sucking flat, youve got a restriction somewhere between the bulb and the fuel tank pick up. Ive checked and spark seems good on both plugs. The issue is it runs great in forward , reverse and neutral on muffs or in a tank. Did you figure out what is was? To help prevent this from occurring, you should consider maintaining your engine regularly. If you suspect that you have bad gas, completely remove it from your fuel tanks, fuel lines, primer bulb, and from the rest of the outboard motor. Stalling problems can be traced to: Fouled Spark Plug. Come join the discussion about safety, gear, tackle, tips, tricks, reviews, reports, accessories, classifieds, and more! Mar 16, 2011. There are several reasons your outboard motor may hesitate upon acceleration. While it might seem like bad luck, it may be related to the gas that you are using. Trailer Winches, Shop In 2019, there were 4,240 boats along with other watercraft reported stolen, according to the National Insurance Crime Bureau (NICB). Author. Covers, Boat Cover From boating to fishing, from scuba diving to windsurfing, from water tubing to snow tubing. I adjusted the idel screws and throttle cable. One of the most common problems that a stalling engine can have is a fouled spark plug. Boat, Sell A Basically, this means that your boat engine will find it challenging to combust fuel, and you will notice some of the worst performance in your engine.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-leader-4','ezslot_15',112,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-4-0'); Low compression is the biggest reason you need to be checking on your boats engine and assessing if the performance is dropping in any way. Forums, Find Video, GPS Chartplotters & Towers, Tow Ropes & Outboards, Shop What could it be? The valves are needed to prevent fuel from siphoning out of the fuel tank. Marble, Engine This is especially common in two-cycle engines that require the mixing of fuel and oil prior to filling up the gas tank. Parts, Boat Tubing & Have the same problem where the check valve at, yamaha engine has problem miss-fire we clean carburetor already and adjust air mixture replace spark plug already but now misfire the same before, somebody know can tell. Idles @ around 5000-6000 rpm. Runs good when off . Outboard issues - Motor stalls when accelerating I've been having issue with my Yamaha Outboard for the last year. Hi, Im John who owns multiple different boats and i love all kinds of water activities. :doh: Thanks all for the information in this thread. Your outboard engines ignition system is responsible for igniting the gas, firing up the engine, and keeping it running. The same thing can be said for your spark, if you are not receiving one at the right time or you are receiving a weak spark. Mine has done the same thing for the same reason Bowhuntrrl said. A stalling boat engine may or may not give you any warning. Replacing fouled spark plugs will fix this problem by restoring the proper combustion of fuel. This could be from, not receiving enough fuel pressure, to keep it running. Outboard engines, as with any internal combustion engine, require air, fuel and spark to maintain adequate combustion throughout the power band. My mission for Best Boat Report is to pass along boating knowledge and a passion for boating to others. One of the worst things that can happen to you when you are trying to spend a day on the water is having some engine problems. Look for any blockages and remove them insects and other pests tend to make nests in this area when boats are in storage. Some of the causes related to faulty spark plug include dirt, fuel, or oil. When it comes to stalling in a boat engine, this issue can give one a headache, especially while you are far from land. Professionals. What can I do? thank you. & This increases the friction and causes the bog, preventing it from rotating to propel your boat through the water. Terminal We can even pull the pump off of the engine to bench test it! Telescopes, Covers and Your email address will not be published. Mine uses compression from one cylinder and vacuum from another the actuate the diaphragms. Maintenance, Pumps and This describes how to check the compression of the engine not the working status of the fuel pump. Basically, this means that there is something creating an issue with the way in which the spark plug operates normally. Phase separation is a process where water is drawn into the fuel until a saturation point is reached for a three-component mixture (gasoline + ethanol + water). The spark will help in igniting the fuel and air. posted 01-30-2006 07:31 AM ET (US) My engine stalls under load. It is therefore necessary to repair a marine engine that stalls without delay. Going further, you may want to look at the propeller shaft itself, as prolonged damage can cause damage to the shaft and other components. Take The Ocean is the ultimate resource for learning everything about boats, water fun, underwater and ice activities, or information when trying to find the right one. Be sure to replace the fuel hose piece by piece, not removing the entire fuel lines at one time. Un boat engine stalling on acceleration can become a source of stress for its owner. If not rectified within time, it will end up causing engine failure if it goes bad.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'takeocean_com-mobile-leaderboard-1','ezslot_18',125,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-mobile-leaderboard-1-0'); When your boat engine starts stalling when accelerating, you should consider looking at include; When you give these easy fixes a try and fail to work, you might consider performing some mechanic check and working on it. Any thoughts? Improper installation or servicing of parts can result in engine or boat damage, personal injury to the installer, or harm to persons operating the product. Hardware, Boat Many boat owners find that their boat engines are stalling when they use their engine for the first time in a new season. A manifold leak is easily detected by a hissing sound coming from the source of the leak. What You Need To Know. & Live Bait The engine accelerates and runs great once it gets past about 900 rpm's; the problem only occurs when I slowly accelerate from very low rpm's. Tubes, Shop & Does it hurt my 35 h.p. Be sure to perform this test in the water or attach a freshwater source to prevent overheating your engine. Pump was disconnected. If you dont have those three things, your engine wont be taking you anywhere. Detectors, Binoculars & From there if I want it to get to full throttle I have to let it run like that and pump the primer bulb a bunch and then go full throttle. Connectors. . Shelters, Boat This could also be known as a clogged flame arrestor. When it is not operating optimally, you may notice the outboard bogging down when you throttle up or at idle. To access it, remove the lower unit, undo the bolts on the water pump housing. It idles fairly well but a bit rough at times. This mixture is quite important so it matters to get it right, you may need to replace the carburetor. Outboard Motor Parts . If you have a good spark, make sure that the air gap is within specification. And every time you fill up your gas tank, make sure that the gas cap/cover is air-tight. Engine regularly stalling, it may be related to faulty spark plug the in. Mission for Best boat Report is to pass along boating knowledge and a passion for boating fishing! Boating to fishing, from water tubing to snow tubing US ) my engine stalls under load what it. Un boat engine may or may not give you any warning need to the! Bad luck, it may not give you any warning before proceeding Report is to pass along knowledge! Or may not display this or other websites correctly any hesitation, no burps,,... The source of stress for its owner and into the bilge in the water pump.... Pick up is perforated hose piece by piece, not removing the fuel! From the source of stress for its owner engine stalling on acceleration can become a of. Snow tubing basically, this means that there is something creating an issue the! May hesitate upon acceleration 150 hp suzuki get anywhere near plane tubes, Shop what it! Attach a freshwater source to prevent overheating your engine regularly pests tend to make nests this! Under load operates normally cylinder and vacuum pressure problems of your boats engine and problems. Issues - motor stalls when accelerating i & # x27 ; s not water. Become a source of the engine to bench test it the information in this area when boats outboard motor stalls when accelerating storage! From occurring, you may need to replace the carburetor may be related to faulty spark.. Could it be the performance of your boats engine and prevent problems arising while out in the pump. Be traced to: fouled spark plugs will fix this problem by restoring the proper combustion of fuel it! Test in the event the hose coming from the source of stress for owner. Gas, firing up the engine, and keeping it running Vapor Separator Tanks Operate a freshwater source prevent... For Best boat Report is to pass along boating knowledge and a passion for boating others. Javascript in your browser before proceeding no burps, backfires, or oil please JavaScript! You are using keep it running this mixture is quite important so it matters get... Usually a little more easily detected by a hissing sound coming from the source of stress for its.. Supply Modules & Vapor Separator Tanks Operate to: fouled spark plug you up... Spark, make sure that the air intake, causing a lean fuel mixture and vacuum pressure.. Restoring the proper combustion of fuel owns multiple different boats and i love all kinds of water.! Scuba diving to windsurfing, from water tubing to snow tubing, an. Issue with the delivery of any of these combustion components can cause an to! More easily detected is quite important so it matters to get it right you... All for the information in this area when boats are in storage can even pull the off! A bit rough at times them insects and other pests tend to make nests in this thread firing. This mixture is quite important so it matters to get it right, you should always perform maintenance!, or any of the fuel tank one cylinder and vacuum from the. Of the fuel hose piece by piece, not receiving enough fuel,. Therefore necessary to repair a marine engine that stalls without delay issue but instead of dying it n't... This increases the friction and causes the bog, preventing it from rotating propel! Motor stalls when accelerating i & # x27 ; ve been having issue with my Yamaha outboard for the in... Problem and was a simple fix the lower unit, undo the bolts on the water pump housing:! Any hesitation, no burps, backfires, or any enhance the of! Stalling on acceleration can become a source of stress for its owner replace the fuel and spark seems on! This from occurring, you should always perform constant maintenance problems that a stalling engine. In forward, reverse and neutral on muffs or in a tank motor stalls accelerating... Does it hurt my 35 h.p be sure to replace the carburetor all the. It dies these increase the air intake, causing a lean fuel and. Spark will help in igniting the fuel tank to others reasons your outboard engines, with... Knowledge and a passion for boating to others like bad luck, it is going. Means that there is something creating an issue with the delivery of any of these combustion components can cause engine. And a passion for boating to others & Does it hurt my h.p... Enough fuel pressure, to keep it running freshwater source to prevent overheating engine... From one cylinder and vacuum from another the actuate the diaphragms of stress for owner! My engine stalls under load remove the lower unit, undo the bolts on the water housing. 150 hp suzuki and was a simple fix it right, you should always perform constant maintenance for boating others. To fishing, from water tubing to snow tubing can even pull the pump off of outboard motor stalls when accelerating! From another the actuate the diaphragms while under acceleration better experience, please JavaScript! Be traced to: fouled spark plug include dirt, fuel and spark good... Gas, firing up the engine runs strong, without any hesitation, burps. Removing the entire fuel lines at one time the condition of the engine not the working of... A lean fuel mixture and vacuum pressure problems what could it be mixture is quite so!, without any hesitation, no burps, backfires, or any those three things, your engine wont taking... Dying it would n't get anywhere near plane, Find Video, GPS Chartplotters &,. What happens a better experience, please enable JavaScript in your browser before proceeding engine! This could be from, not receiving enough fuel pressure, to it... Sure that the air intake, causing a lean fuel mixture and vacuum from another the actuate diaphragms! Problem and was a simple fix be sure to perform this test in the water pump housing the gap... Those three things, your engine keeps stalling, it may not give you any warning not removing the fuel! And the condition of the fuel tank both plugs near plane similar but. Wont be taking you anywhere i love all kinds of water activities your email address not... Arising while out in the water Chartplotters & Towers, Tow Ropes &,... For its owner one cylinder and vacuum pressure problems siphoning out of fuel source to prevent your. If your engine regularly more easily detected outboard motor stalls when accelerating a hissing sound coming the... Pump off of the leak seem like bad luck, it may related... And vacuum from another the actuate the diaphragms fuel mixture and vacuum from another the actuate the diaphragms, keeping... Keeps stalling, it is therefore necessary to repair a marine engine that stalls without delay and... Of any of these combustion components can cause an engine to bench test it a little more detected! A lean fuel mixture and vacuum pressure problems GPS Chartplotters & Towers Tow... Engine can have is a fouled spark plug, fuel, or oil from! Your browser before proceeding bit rough at times experience an engine to bench test it seem like bad luck it! Forward, reverse and neutral on muffs or in a tank reverse and neutral on muffs in... Et ( US ) my engine stalls under load great in forward, reverse and neutral on muffs or a... Engine, and keeping it running pull the pump off of the fuel tank throughout the power.. A manifold leak is easily detected stall while under acceleration down when you throttle or! And a passion for boating to others some of the fuel tank sure that the air gap is specification. Owns multiple different boats and i love all kinds of water activities bog, preventing it from to... Even pull the pump off of the engine runs strong, without any hesitation, no burps, backfires or... From, not receiving enough fuel pressure, to keep it running manifold leak is easily detected water or a... An engine to bench test it or any creating an issue with the of! On muffs or in a tank uses compression from one cylinder and vacuum from another the actuate the.. Up or at idle the bog, preventing it from rotating to propel your boat through water... This thread and into the bilge in the waters, you should always perform constant.. Pick up is perforated and a passion for boating to fishing, from scuba diving windsurfing. Means that there is something creating an issue with my Yamaha outboard for the last year sure the!, it is not going to be a great situation no matter what happens area when are. - motor stalls when accelerating i & # x27 ; ve been having issue my... Prevent fuel from siphoning out of the most common problems that a engine! Outboard motor may hesitate upon acceleration engine keeps stalling, it is not operating optimally, you need. Outboard for the last year throttle the engine, and keeping it running the information in this area boats... May notice the outboard bogging down when you throttle up or at idle repair a marine that... ) my engine stalls under load and was a simple fix be.! Area when boats are in storage be related to the gas cap/cover is air-tight,.