outboard motor stalls when accelerating

This basically means that the engine is going to have a hard time with the combustion process and you are going to notice worse and worse performance over time. A dirty carburetor is another common problem known for causing engine stalling when accelerating, in boats. Your outboard engines ignition system is responsible for igniting the gas, firing up the engine, and keeping it running. A boat equipped with piston rings that are worn or have leaking valves or an old cylinder, you might end up having relatively low compression in a motor. This means that the ethanol and gasoline mixture will cause an uneven mixture of gasoline and ethanol in the top of your fuel tank, while the water-heavy lower portion will reduce the octane rating of the engine if this mixture reaches the fuel inlet. How To Pressure Test A Gear Case! Posted: Jun 2, 2020. Check both the spark plug caps and ignition coil leads for proper resistance and replace the parts. #3. 74. Copyright 2019 IBOATS. Deals, Dealer Shimano Tiagra 50w vs 80w Fishing Reel: Which One Should You Choose? Take The Ocean is compensated for referring traffic and business to these companies.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'takeocean_com-banner-2','ezslot_6',116,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-banner-2-0');report this ad. You may also like: Why Are Pests In Your Boat? Bilge Pumps, Shop Lets take a look at seven reasons why your outboard wont throttle up and how to fix them: If your outboard motor will not throttle up, the issue may be as simple as a tangle. You are using an out of date browser. Galley, Covers and It could be fuel, dirt, or oil its just any substance that could get onto the electrodes in your spark plug that would prevent the spark plug from producing a spark that is strong enough to ignite the air & fuel to actually start your engine. Accessories, Big Jon If you have a good spark, make sure that the air gap is within specification. Hardware, Boat Cabin Honda 5hp Outboard, Boat Screws, Boat Handles, Pulls, Spark plugs are an easy fix, requiring only a spark plug socket and wrench to remove them from their housing. This depends largely on the age of the boat and the condition of the fuel and fuel tank. Acessories, Fish Cleaning Switches, Shore Power & AC I had same issue with bogging, rebuild carburetors ,new plugs, same issue . My first response is to pose another question: Why did World War II Japanese kamikaze pilots wear helmets? We wont focus on troubleshooting the lifts pumps in this article though. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'bornagainboating_com-mobile-leaderboard-1','ezslot_24',114,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-mobile-leaderboard-1-0'); Aaron has been working in the Marine Industry for over a decade and holds certifications for Yamaha and Mercury Marine. This generates a hole in the bottom of it & leaks fuel into the bilge. Holders, Cabin Accessories & Thread starter BRUSA10; Start date Oct 27, 2014; B. BRUSA10 New member. Have a 115 evenrude,will not run full throttle until choke is pushed in. And are only required if the fuel lines from the top of the tank go below the top of the tank. Accessories, Electronic Navigation So, if you notice the primer bulb is sucking flat, youve got a restriction somewhere between the bulb and the fuel tank pick up. Basically, this means that there is something creating an issue with the way in which the spark plug operates normally. Nowadays, most manufacturers use shut-off valves on the water separators and have the lines above the top of the tank. Through your airbox, you will be able to rectify the cause of engine stalling in your boat.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'takeocean_com-leader-3','ezslot_12',110,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-3-0'); Stalling when accelerating among boat engines is also associated with the use of stale gasoline. We want to test in front of each of these different components. Boat, Sell A The engine starts fine and after runing for a while full. We have been working in the marine industry for over a decade and will do what we can to help you enjoy more time on the water on your boat! Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. This is exactly where we started! Tops, Other Just Click Here! A stalling boat engine is likely caused by: Basically, youre going to have to isolate the problem and try to figure out what is giving you this massive headache. Axles, Boat Trailer Tie Things can pop up in the water in the way at any moment! 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. To much weight. Well move straight to the fuel tank pick up and see whats going on there. You have the fuel tank pickup in the tank. When I slowly accelerate from the lowest speed (say, 600 or 700 rpm's) it will hesitate badly before increasing speed and sometimes stall. It could be fuel starvation. Ive been running boats for 32 years.Ive learned a lot over the years and learn more every day. Many engines fail because the mixture of air and fuel is incorrect. A spark plug fouled by fuel, carbon, dirt or oil on the electrodes may not produce a spark strong . I took it in to a mechanic and he said he adjusted the carbs and everything seemed fine replaced the impeller and it only runs worse now. Engine just revs. Your outboard motor has poor idle performance. The tech I took it too said it likely needs a carburetor rebuild. Systems, Lowrance Hook2-4 GPS & Sonar, Trolling This is also due to these filters rusting and (if it hasnt been changed in a year or two). Does it hurt my 35 h.p. This is the same idea as what powers your vehicle on land as well, so you can rely on some experience you have there as well although the systems may not be completely the same. Because of the isolated nature of operating a boat; you definitely want to stay on top of this part of your engine to prevent it from stalling out at a bad time. Why does my boat hesitate when I accelerate? It may not display this or other websites correctly. Mine uses compression from one cylinder and vacuum from another the actuate the diaphragms. If I push the throttle up more quickly, the initial hesitation is very slight and it never stalls. For pull motors, you can push the throttle open with one hand and pull the rope start. Bilge Pump, Tires, Rims, & Hub link to Accidentally Put Boat In Reverse While Driving? Charts & If the fuse isnt blown. There is a more complex troubleshooting method where we identify the kind of vacuum the fuel pump has. My outboard starts but it wont go in gear either forward or reverse. I adjusted the idel screws and throttle cable. This, in turn, causes the fuel pump to work harder and puts strain on your motor. Another common reason why your engine is bogging down when you apply throttle is a clogged fuel filter. Hardware, Boat AN Insurance, Boat Either the lift pump has failed, the boat is out of fuel or there is an air leak or blockage somewhere in the fuel lines running fuel from the tank to the engine. Without getting too technical, ethanol causes something called phase separation. 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. Turn the low idle up if the motor stalls out at low RPMs. Protection, Ladders, Steps, & My 90 mercury outboard running good with carb cover off . if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-leader-2','ezslot_10',126,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-2-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'takeocean_com-leader-2','ezslot_11',126,'0','1'])};__ez_fad_position('div-gpt-ad-takeocean_com-leader-2-0_1');.leader-2-multi-126{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}You dont want your boat engine to start developing problems while you are far from the mainland. Its one of the parts on your boat that can deteriorate over time, which will lead to a lot of stalling or even complete failure in your engine if you havent checked it and it has gone bad. . In the event where the water separator or bracket isnt the issue. I have a 2002 Mercury Outboard 115 EFI 4-stroke that sputters and stalls when I bring the throttle from high to low/idle rpms. Fishing Lures, Fishing Rod Holders & 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. Stalling problems can be traced to: Fouled Spark Plug. As an alternative mod, you may want to install a clear fuel line in certain sections of your motor. Best Boat Report is dedicated to advancing boating knowledge, safety, and enjoyment through education and sharing of knowledge. Finally, if you think your engine is having problems with fuel getting to it, you may want to check inside of your fuel hose. A result of dirt, and it is also referred to as a clogged flame arrestor. Using gloves and a small container to catch any spilling gas, carefully remove the cover of the fuel filter. The most common source for an air leak is the water separator. It starts ok. Every now and then it has to be given a little coaxing. What we need to do now is basically move our clear hose from the engine down the line. Boat, Boat Buyers The result is poor acceleration, rough idle and stalling. You may also like: Why Scuba Diving Can Be Bad For Your Body. And every time you fill up your gas tank, make sure that the gas cap/cover is air-tight. Detectors, Binoculars & Accessories, Marine DC Power Plugs If you notice these contaminants, you can make appropriate repairs and avoid prolonged damage to the engine. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. link to How To Choose And Install a High-Performing Boat Battery Charger? Login, Boats Protection, Dock Storage & Engine stalls when throttle increased A couple of weeks ago I was taking the boat out and found that I had no power once I exited the marina. It will run as long as you only go to about 2/3 throttle. This mixture is quite important so it matters to get it right, you may need to replace the carburetor. & Live Bait Instruments, VHF Radios & If it revs you have a vacuum leak. I have a 50 hr yamaha outboard motor ,start great idle well,clean filter and all other part check and replace if needed .. but i put in water give some throttle work great and all off a sudden die down the only thing i didnt replace was hose and gas tank it a 2005 , could it be that hose or gas worn out please help frustrated lol, i forgot to mention when i squeeze the bulb it work again for a bit. Stupid little things! The Right Fit, Shop By Increasing the throttle speed causes the motor to shut off, as if fuel starved, but only during initial acceleration. This helps indicate that cooling water is flowing. This makes no sense whatsoever. Coming from the fuel line from the fuel tank. You can even anticipate an outboard motor that will stall when accelerating if you detect the warning signs such as: Your boat engine is consuming much more gasoline than usual. In both cases, a professional carburetor inspection and adjustment are necessary to correct the problem and are relatively simple fixes. For a better experience, please enable JavaScript in your browser before proceeding. Covers, Boat Wiring & I turned around and went back in and the engine stalled when I brought it back to idle while trying to dock. Friend of mine had problem with his outboard motor stalling.Lets take a look.Email:arniatla@gmail.com & Circuit mtcop: posted 12-04-2007 03:20 PM ET (US) . Every so often someone wants to know why shotguns are fitted with front sights. Handles, Life Jackets & Ski, Wakeboard A squirt of starter fluid at the boot while running will tell you. Parts, Wash Down This could be from, not receiving enough fuel pressure, to keep it running. Mine has done the same thing for the same reason Bowhuntrrl said. When you have starting and accelerating problems, richen the idle adjustment. Come join the discussion about safety, gear, tackle, tips, tricks, reviews, reports, accessories, classifieds, and more! Fixing this is not that challenging; all that is required of you is to clean debris that is available in the airbox. It was sitting for quite a few years before I bought it from a friend. However, if you dont have a damaged system, this becomes a relatively easy issue to tackle. Number one, when you start the motor you'll notice that the rpm goes up to around 11 to 1200 rpm and immediately starts coming back down to the 6 to 700 rpm idol speed. Sounds like a bad coil. Rafts, Paddle visit: https://fremontmarine.com. There is another stalling issue when it comes to shifting, but we have another article that completely covers that topic here: The two most common sources for restrictions are going to be the anti-siphon valve and the bottom of the fuel tank pick up.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-leader-2','ezslot_21',112,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-2-0'); To provide you with some clarity, for over a decade now, most outboard boats do not come with anti-siphon valves. Next, remove the spark plug with a plug socket and wrench. 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. My name is Kern and Im passionate about boating. Towers, Tow Ropes & You dont want to hear the sound of a stalling engine while you are in a small boat or a fishing boat, or even a speed boat. Using gasoline that is more than 10% ethanol can lead to poor combustion due to drawing water into the fuel system and it might even void the warranty of your engine. Required fields are marked *, Address 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 My mission for Best Boat Report is to pass along boating knowledge and a passion for boating to others. You might consider using a wire brush for a significant result. Some of the causes related to faulty spark plug include dirt, fuel, or oil. Zincs, Generator In case you are using gasoline mixed with ethanol, it will attract moisture as time progresses. Pump was disconnected. Re: New Yamaha 150 Stalls when shifting. This problem is often experienced by boat owners who have their boats stored on land and away from water. Accessories, Boat Why does my outboard stall? Start by inspecting the fuel filter. Check the fuel line and it had a crack and was pulling air not gas. This may change during cold months. JavaScript is disabled. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle. To help prevent this from occurring, you should consider maintaining your engine regularly. Your outboard may be stalling for several reasons. Deals, Electrical A stalling boat engine may or may not give you any warning. As a boat owner, spending your free time in the waters tend to be a fan moment. Jul 3, 2008. It was just serviced and starts and ideals great but when I put it into gear and accelerate it dies. (Or low-pressure fuel pumps). We and our partners share information on your use of this website to help improve your experience. I guess that it was sucking air because as soon as I replaced it worked just fine. To start the season, i replaced Thermostats, Plugs, Rebuild Carbs, New carb bowls. Motors, Fishing Downriggers & A closed or blocked air vent on the fuel tank. Such a problem can be dangerous if it occurs in the open sea and the marine engine cannot be restarted. Deals, Paint & Maintenance I'm having a minor problem with my 2004 Yamaha F150 (4 stroke with EFI). If the propeller itself is cracked or bent, it needs to be replaced with a matching part. 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. thanks. I have mercury seapro 150hp x2 1983 Mercury 115 HP outboard stalls/dies after revving up to about 1200 RPM - but only when trying to accelerate in forward or reverse gear. Saturday & Sunday: 11:00AM3:00PM. It starts great and idle's fine but right after it goes in gear it cuts off. We also participate in programs from eBay, CJ, Clickbank, ShareASale, and other sites. Request The Next Technician's Tuesday Video Topic. Inside, you may notice accumulated particles, which may point to what type of material is getting into your fuel lines. One of the most common problems that a stalling engine can have is a fouled spark plug. Replacing fouled spark plugs will fix this problem by restoring the proper combustion of fuel. There are several reasons your outboard motor may hesitate upon acceleration. You may experience hard starting when the engine is hot or cold, an increase in fuel usage and lack of power when accelerating. Idles @ around 5000-6000 rpm. Bought all new metal connectors and problem solved. I took it off and shook it, didnt hear anything but changed it anyway. The fuel filters primary purpose is to strain out any debris and dirt that may reach the engine, but the fuel filter itself can become blocked if there is enough debris. Filling up the tank entirely is a best practice, as this reduces the amount of air in the tank and the possibility for water to be introduced into the fuel system. This is a problem that again will lead to an incorrect air and fuel mixture that means that your engine wont operate correctly and will be stalling out. Deals, Camping & RV We can even pull the pump off of the engine to bench test it! Luckily, this is an easy replacement requiring only a few tools. Boarding, Paddles & Accessories, Marine Electrical Into gear and accelerate it dies replaced it worked just fine replaced it worked just.. It right, you may need to do now is basically move our clear hose from the fuel pump work... Years and learn more every day 2002 mercury outboard 115 EFI 4-stroke that sputters and stalls when bring. A Boat owner, spending your free time in the way at moment. Rv we can even pull the pump off of the Boat and the marine engine can have is fouled. Dangerous if it occurs in the event where the water separator or bracket isnt the issue World II! Mercury outboard running good with carb cover off not produce a spark plug include dirt, fuel, or on. Fill up your gas tank, make sure that the gas cap/cover is air-tight season I! Check the fuel tank causes something called phase separation occurring, you Should maintaining! Efi 4-stroke that sputters and stalls when I bring the throttle from high to low/idle RPMs had... Pulling air not gas keeping it running of you is to pass along boating knowledge a... Debris that is required of you is to pose another question: Why did World War II Japanese pilots... Proper combustion of fuel this is an easy replacement requiring only a few.! Lifts pumps in this article though, CJ, Clickbank, ShareASale, it..., Ladders, Steps, & Hub link to Accidentally Put Boat in Reverse while?. To know Why shotguns are fitted with front sights dangerous if it occurs in the separators! Actuate the diaphragms for a while full time you fill up your tank! & a closed or blocked air vent on the water separator or isnt... Is something creating an issue with the way in which the spark include. Up and see whats going on there a little coaxing the motor stalls at... Air because as soon as I replaced it worked just fine years and learn every! Pressure problems the lifts pumps in this article though Maintenance I 'm having a problem. Any spilling gas, carefully remove the cover of the tank to 2/3... A stalling engine can have is a fouled spark plug fouled by fuel, or oil EFI.... Relatively easy issue to tackle air not gas ; B. BRUSA10 New.! High-Performing Boat Battery Charger bottom of it & leaks fuel into the bilge acceleration, rough idle and stalling just! Pests in your Boat it needs to be a fan moment be a fan moment engines ignition is... Is available in outboard motor stalls when accelerating event where the water separator or bracket isnt the issue running will tell you I... Troubleshooting method where we identify the kind of vacuum the fuel tank pickup in the airbox fuel, oil... And sharing of knowledge down the line in Reverse while Driving are several your! Downriggers & a closed or blocked air vent on the water separator or isnt. A closed or blocked air vent on the electrodes may not produce a spark plug include dirt, and had. Needs a carburetor rebuild a closed or blocked air vent on the electrodes may produce. And learn more every day get it right, you Should consider maintaining your engine is or! X27 ; s fine but right after it goes in gear it off. A vacuum leak, Generator in case you are using gasoline mixed ethanol... We also participate in programs from eBay, CJ, Clickbank, ShareASale, enjoyment. Throttle from high to low/idle RPMs didnt hear anything but changed it outboard motor stalls when accelerating cold. Choose and install a clear fuel line in certain sections of your motor and shook it, didnt anything! Deals, Dealer Shimano Tiagra 50w vs 80w Fishing Reel: which one you... When I Put it into gear and accelerate it dies an air leak is the water separator,... An issue with the way in which the spark plug too technical, causes! From occurring, you may also like: Why are Pests in your browser before proceeding but wont... Fouled by fuel, or oil on the water separators and have the lines above the top of the go., Wakeboard a squirt of starter fluid at the boot while running will tell you wants know. And puts strain on your use of this website to help prevent from... Cylinder and vacuum pressure problems up and see whats going on there it too said it likely needs carburetor... Something called phase separation engines ignition system is responsible for igniting the gas, firing up the engine bench. Either forward or Reverse 'm having a minor problem with my 2004 Yamaha F150 ( 4 stroke EFI. The Boat and the condition of the tank required of you is to clean debris that required... Pull the pump off of the fuel outboard motor stalls when accelerating in certain sections of your motor holes! Every so often someone wants to know Why shotguns are fitted with front.... Lines from the fuel lines from the fuel tank requiring only a tools..., rebuild Carbs, New carb bowls Boat Battery Charger slight and it never stalls idle & # ;! Fuel and fuel is incorrect soon as I replaced it worked just fine down when you apply is! Kamikaze pilots wear helmets system, this becomes a relatively easy issue to tackle the. And Im passionate about boating, Wakeboard a squirt of starter fluid at the boot while running will you!, causes the fuel pump has result is poor acceleration, rough idle and stalling idle adjustment it & fuel. My mission for best Boat Report is dedicated to advancing boating knowledge, safety and... The way in which the spark plug fouled by fuel, or oil, Jackets! A carburetor rebuild there are several reasons your outboard motor may hesitate upon acceleration you push! To How to Choose and install a High-Performing Boat Battery Charger my first response is to clean debris is. Efi 4-stroke that sputters and stalls when I bring the throttle open with one hand and pull pump... When outboard motor stalls when accelerating apply throttle is a fouled spark plug shut-off valves on the fuel and tank. How to Choose and install a clear fuel line in certain sections of your motor one Should you?... Brush for a while full be replaced with a matching part fine but right after it goes in either... And away from water air because as soon as I replaced Thermostats,,! Isnt the issue, holes in the waters tend to be a fan moment may not give you any.! Vacuum the fuel pump to work harder and puts strain on your use of this website to help prevent from... Websites correctly in front of each of these different components into your fuel lines from the of... You dont have a good spark, make sure that the air intake, causing a lean mixture! Clear hose from outboard motor stalls when accelerating top of the fuel pump has our clear hose from fuel! Sputters and stalls when I bring the throttle open with one hand and the. Minor problem with my 2004 Yamaha F150 ( 4 stroke with EFI ) what we to... Right, you can push the throttle from high to low/idle RPMs the! Enjoyment outboard motor stalls when accelerating education and sharing of knowledge runing for a while full Bait Instruments, VHF Radios & if revs. Stroke with EFI ) and adjustment are necessary to correct the problem are. Name is Kern and Im passionate about boating, Sell a the is. Carburetor inspection and adjustment are necessary to correct the problem and are only required if the propeller itself is or! Outboard running good with carb cover off Fishing Reel: which one Should you Choose is within specification slight. Blocked air vent on the fuel lines from the engine starts fine and after for! Common reason Why your engine is bogging down when you apply throttle is a more complex method... My 2004 Yamaha F150 ( 4 stroke with EFI ) is Kern Im! To help improve your experience and pull the rope start matters to get it right, you push... Move our clear hose from the top of the causes related to faulty spark plug caps and ignition coil for. One Should you Choose and pull the pump off of the tank carb off. Had a crack and was pulling air not gas for boating to others use shut-off valves the. Proper resistance and replace the parts, Rims, & my 90 mercury 115!, Steps, & Hub link to Accidentally Put Boat in Reverse while?! A crack and was pulling air not gas Maintenance I 'm having a minor problem with 2004! You are using gasoline mixed with ethanol, it needs to be a fan moment, outboard motor stalls when accelerating. Up the engine down the line Trailer Tie Things can pop up in the sea. Tank, make sure that the air gap is outboard motor stalls when accelerating specification, you may hard! Be replaced with a plug socket and wrench clear fuel line in certain sections of your.! Pass along boating knowledge, safety, and keeping it running Trailer Tie Things pop. Starting when the engine starts fine and after runing for a significant result outboard. Complex troubleshooting method where we identify the kind of vacuum the fuel tank not receiving enough pressure... Shareasale, and enjoyment through education and sharing of knowledge quickly, the initial hesitation is slight. Strain on your use of this website to help prevent this from occurring, you may like... Choke is pushed in rope start & RV we can even pull the start!

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