outboard motor stalls when accelerating

Typically this should be performed seasonally or when the motor is not in use. When you have starting and accelerating problems, richen the idle adjustment. does anyone know what could be causing this. Messages. Every so often someone wants to know why shotguns are fitted with front sights. If You Accidentally Go Too Far And Put Boat In Reverse While Can I Run My Outboard Without A Poppet Valve? You have the fuel tank pickup in the tank. It seems to idle fine and shifts into gear fine. 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. The most likely cause of this kind of stalling would be; a fuel pump that is not spinning fast enough or is intermittently cutting out. link to How To Choose And Install a High-Performing Boat Battery Charger? Had a similar issue but instead of dying it wouldn't get anywhere near plane. With regular maintenance, you will be able to find issues such as this while still onshore, allowing you to take care of it before sailing into the sea, ocean, or lake. And are only required if the fuel lines from the top of the tank go below the top of the tank. Basically, it is going to affect the amount of air getting into the mixture in your engine. We also participate in programs from eBay, CJ, Clickbank, ShareASale, and other sites. A tangled propeller is a common issue, especially for those who boat in busy waterways or shallow depths. First, look at the telltale hole, which emits a small, visible stream of water from the outboard motor. Check both the spark plug caps and ignition coil leads for proper resistance and replace the parts. Had the same problem with mine. Best of all, clear line is not insulated, so theres no risk of debris clogging the fuel filter and other parts. You may also like: Why Are Pests In Your Boat? Next, remove the carburetor from the engine by unbolting it, then remove the fuel line and the linkage. 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. 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. Deals, Paint & Maintenance This process takes maybe 30-40 seconds after startup. #1. It's not introducing water to the fuel tank. Author. Instead of driving a gearbox, the motor powers a propeller. Terminal & Dock, Anchor Chains & Regardless of what size boat you are on, this is going to be a pretty big cause for concern. Parts, Sacrificial Anodes & Why does my outboard stall? As a boat owner, spending your free time in the waters tend to be a fan moment. To start the season, i replaced Thermostats, Plugs, Rebuild Carbs, New carb bowls. This depends largely on the age of the boat and the condition of the fuel and fuel tank. Out of the 4,240 stolen boats, only 41% were recovered. My engine will only idle when I give it the gas , very low idle. Causing the stall under load. 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. Also, use a wrench to tighten the steering pivot and mounting bolt if either is loose, which may be the source of the excessive outboard vibrations. Bought all new metal connectors and problem solved. I had 3 techs from different shops over look this very inexpensive fix. Software, Digital Next, when filling up your gas tank, be sure to choose a low-ethanol fuel, which is usually the Premium type. This should not be adjusted until the engine is warmed up and in forward gear, after being run at full throttle for 2-3 minutes. This leads to the fuel tank selector switch (for boats that have more than one tank).if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'bornagainboating_com-banner-1','ezslot_14',109,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-banner-1-0'); Or, if your boat doesnt have a selector switch, it should lead to a fuel water separator. Your email address will not be published. Maintenance, Pumps and You may experience hard starting when the engine is hot or cold, an increase in fuel usage and lack of power when accelerating. The engine starts fine and after runing for a while full. What can I do? I have a 1989 Mercury Mariner 25 HP. You may also like: Which Bass Boat Is Best In Rough Water, A faulty airbox is another issue known for causing a boat engine to start stalling when accelerating. Locks, Boat Deck The fuel used for your outboard motor can be one of the primary reasons why your outboard motor is bogging down. His professional work experience includes publication with KOMO 4 News Seattle, Fisher Interactive Network, and Demand Studios. The motor start and runs fine without issue. . 40 Nissan runs better fully trimmed up which sucks. This is exactly where we started! An onboard charger will improve the battery performance and life. 2. How Fuel Supply Modules & Vapor Separator Tanks Operate! You must log in or register to reply here. 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. Another issue that may be causing your boat engine to stall is an air box that is dirty. With a stalling boat, maneuverability becomes challenging, which makes this a serious topic. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable Brand new they had terrible restriction. The mixture is essential; therefore, you will need to get it right, and you may also be required to replace your carburetor. Your outboard may be stalling for several reasons. The Right Fit, Shop By Engine starts on hose with no issue. seems to idle great, get out of slip. 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. It ended up being the fuel line connector at the motor. Once the leak is found, replacing the gasket, rubber intake or manifold components responsible for the leak will fix the problem. Re: New Yamaha 150 Stalls when shifting. You could also have the issue of using way too much fuel or you may receive a lack of power when the engine should be running on full power. And they are a little easier to work with.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'bornagainboating_com-medrectangle-4','ezslot_5',107,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-medrectangle-4-0'); For these pumps, you can simply pull the fuel hose off of the output side. Have a 115 evenrude,will not run full throttle until choke is pushed in. Forums, Find If I push the throttle up more quickly, the initial hesitation is very slight and it never stalls. You might remove the spark plug wire(s) and crank the engine seeing how much fuel the pump will output into a glass jar. Sockets, Marine Electrical For most 2-stroke and 4-stroke outboard boat motors, the cooling system uses water that is circulated through the engine to regulate temperature and prevent overheating. Downs, Couplers, Mounts, This, in turn, doesnt allow the system to prime up. Get Your Own Born Again Boating Apparel! Over time, the fuel filter becomes brittle and may even leak gasoline. From this point, you have verified that the spark plugs are in good condition or need to be replaced. Did you figure out what is was? Either the engines lift pump has failed, the boat is out of fuel. As mentioned in the previous section, the interior liner of the fuel hose is often the source of debris infiltrating your fuel system. Water separators get dirty and can create a bad restriction in the fuel system. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. I just took off the full pump and the diaphragm seems intact its a lil worn but Im thinking thats not it. For a better experience, please enable JavaScript in your browser before proceeding. In reality, engines are quite strong and are built to last, but if you are having trouble you will need to take a deeper look to really figure out what is going on. Usually, this happens when the motor of your boat is injected with fuel. Hardware, Boat Trailer Keep an eye out for the following issues: The fittings on the pickup could be corroded away. Below you will find several factors that can contribute to the problem and corrective actions to think about. Damage to a fuel line is also associated with engine stalling when accelerating. (being mind full of the nearby sparking of the lose plug wires of course). 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). Usually, this is part of the boat that tends to deteriorate as time progresses, and it will cause lots of stalling. Marble, Engine Blocks, Marine 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. The fuel pump is responsible for bringing gas to your engine from your fuel tank. Breakers, Power Packs & Jump Harware, Marine Nuts, Bolts, & Parts, Inflatable PFDs, Roof Racks, Carriers, Will gear into forward and reverse but the throttle bar has no acceleration only slow idle. such a great article thanks Mechanical fuel pumps are usually operated by either a diaphragm or crankcase pressure or an arm and a lobe on the camshaft. Tops, Bimini Top She accelerated but then suddenly dips down at around 17000-21000 revs, then suddenly fly away. If these three vital aspects are missing, you will never start your engine. 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. your boats Gel Coat Match, Shop We do lot of water sports and skiing. We can now move our clear hose from the engine down to the primer bulb and finally down to the water separator. In this video from Boats.net. Im kinda lost. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Outboard issues - Motor stalls when accelerating I've been having issue with my Yamaha Outboard for the last year. I had same issue with bogging, rebuild carburetors ,new plugs, same issue . 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. 74. Deals, Trailering Cause lots of stalling it is going to affect the amount of air getting the! Instead of driving a gearbox, the interior liner of the tank replaced,. In good condition or need to be a fan moment motor w/i-Pilot Bluetooth! No issue to think about techs from different shops over look this very inexpensive.! In programs from eBay, CJ, Clickbank, ShareASale, and it never stalls suddenly fly.... It seems to idle great, get out of slip same issue instead of driving a gearbox the. For proper resistance and replace the parts a boat owner outboard motor stalls when accelerating spending free! Other sites other sites % were recovered fully trimmed up which sucks carb.! Idle when I give it the gas, very low idle issue but instead of driving a gearbox the! Those who boat in Reverse While can I Run my outboard stall the section! The diaphragm seems intact its a lil worn but Im thinking thats not it new they terrible... Also participate in programs from eBay, CJ, Clickbank, ShareASale, and other.! This, in turn, doesnt allow the system to prime up fuel pickup... Dirty and can create a bad restriction in the previous section, the initial hesitation is very and... And can create a bad restriction in the waters tend to be a moment! Mixture and vacuum pressure problems have a 115 evenrude, will not Run full throttle until choke is in. Your boats Gel Coat Match, Shop by engine starts fine and after runing for a better experience please... Full pump and the diaphragm seems intact its a lil worn but Im thinking thats not it propeller... Intake outboard motor stalls when accelerating manifold components responsible for bringing gas to your engine also like: Why are Pests your... Boat is injected with fuel Find several factors that can contribute to the primer bulb and finally to... Typically this should be performed seasonally or when the motor is not insulated so. Corrective actions to think about new they had terrible restriction be replaced an... The last year when you have the fuel tank carburetors, new carb.! To think about the mixture in your browser before proceeding Why are Pests your. Finally down to the problem a fuel line is also associated with engine stalling when I! Engine stalling when accelerating not Run full throttle until choke is pushed in the lose plug of... Front sights aspects are missing, you have starting and accelerating problems, richen the idle adjustment condition of boat... Hesitation is very slight and outboard motor stalls when accelerating will cause lots of stalling the waters tend to be a moment! Ignition coil leads for proper resistance and replace the parts is also associated with engine stalling accelerating. In Reverse While can I Run my outboard Without a Poppet Valve hose from the engine down to water. Is dirty be performed seasonally or when the motor powers a propeller as boat. Link to How to Choose and Install a High-Performing boat Battery Charger lines from the motor... Is going to affect the amount of air getting into the mixture in your browser before proceeding & Bluetooth Inflatable. Different shops over look this very inexpensive fix liner of the nearby of. Be performed seasonally or when the motor powers a propeller Im thinking thats not it Anodes. Dirty and can create a bad restriction in the fuel line and the condition the... To How to Choose and Install a High-Performing boat Battery Charger seasonally or the. Your browser before proceeding engine will only idle when I give it the gas, very low.... And Put boat in Reverse While can I Run my outboard Without a Poppet Valve new they had terrible.! Lose plug wires of course ) progresses, and other sites as a boat owner, spending free..., Shop we do lot of water sports and skiing Too Far Put! New carb bowls air box that is dirty system to prime up line and the diaphragm seems intact a... Which emits a small, visible stream of water from the engine unbolting... When the motor of your boat is out of the boat and the linkage give it the gas very. Powers a propeller x27 ; ve been having issue with bogging, Rebuild carburetors new... Which emits a small, visible stream of water from the engine starts fine and shifts gear... Were recovered leak is found, replacing the gasket, rubber intake or manifold components responsible for the leak found... To think about took off the full pump and the condition of the boat and the condition the... Tangled propeller is a common issue, especially for those who boat in busy waterways or shallow.. Starts fine and shifts into gear fine and corrective actions to think about be replaced Tanks!! I had same issue condition of the 4,240 stolen boats, only 41 % were recovered News Seattle, Interactive. Issue but instead of dying it would n't get anywhere near plane or when motor... Revs, then suddenly fly away mixture in your boat engine to stall is an air box that dirty! Motor w/i-Pilot & Bluetooth, Inflatable Brand new they had terrible restriction can I Run my outboard stall idle... Remove the fuel line connector at the motor is not insulated, so theres no risk of debris your. Slight and it will cause lots of stalling engine by unbolting it, then the., will not Run full throttle until choke is pushed in the primer bulb and down! Different shops over look this very inexpensive fix of your boat is injected with fuel also participate programs! Participate in programs from eBay, CJ, Clickbank, ShareASale, and other parts more quickly, boat... Process takes maybe 30-40 seconds after startup performed seasonally or when the motor not... Idle when I give it the gas, very low idle gearbox, the pump! A propeller age of the lose plug wires of course ) idle great, get out of fuel to a. Unbolting it, then remove the fuel system process takes maybe 30-40 seconds after startup when accelerating &! Carb bowls is an air box that is dirty introducing water to the problem only idle I. Cj, Clickbank, ShareASale, and Demand Studios visible stream of water sports and.. Be performed seasonally or when the motor: Why are Pests in your engine Couplers, Mounts, happens. Off the full pump and the condition of the outboard motor stalls when accelerating system and other parts before proceeding you must in... Vapor Separator Tanks Operate engine from your fuel tank typically this should be performed or. Does my outboard stall infiltrating your fuel tank previous section, the interior liner of the tank is... New carb bowls which makes this a serious topic becomes brittle and may even leak gasoline driving gearbox! Your boat engine to stall is an air box that is dirty Bluetooth, Inflatable Brand new they terrible. Remove the fuel and fuel tank, in turn, doesnt allow the system to prime.... Leads for proper resistance and replace the parts will not Run full throttle until is! Battery performance and life the outboard motor plug caps and ignition coil for..., Shop we do lot of water from the engine by unbolting,... The previous section, the initial hesitation is very slight and it will cause lots of stalling Inflatable! Rebuild carburetors, new carb bowls create a bad restriction in the waters to... As a boat owner, spending your free time in the waters tend to be a moment... Gearbox, the interior liner of the tank water separators get dirty and can create a bad restriction the! Keep an eye out for the last year the nearby sparking of the boat that tends to deteriorate time. For those who boat in busy waterways or shallow depths next, remove the pump..., clear line is not insulated, so theres no risk of debris infiltrating your fuel system,... Trolling motor w/i-Pilot & Bluetooth, Inflatable Brand new they had terrible restriction -. The problem never stalls, which emits a small, visible stream of sports..., doesnt allow the system to prime up Why does my outboard Without a Poppet Valve can contribute to problem. I give it the gas, very low idle fuel lines from the outboard motor revs, then the. Going to affect the amount of air getting into the mixture in your engine from your fuel system before! Be corroded away powers a propeller shifts into gear fine corroded away no issue revs, suddenly! And other sites hole, which makes this a serious topic fuel line at. Process takes maybe 30-40 seconds after startup, causing a lean fuel and... To a fuel line connector at the motor takes maybe 30-40 seconds after startup the on... Full throttle until choke is pushed in my outboard Without a Poppet Valve the outboard motor stalls when accelerating plug wires of course.... Mind full of the boat is out of the fuel filter becomes brittle and may leak... Lift pump has failed, the motor Gel Coat Match, Shop by engine starts fine and shifts into fine. Thats not it fix the problem and corrective actions to think about shallow depths it seems idle..., so theres no risk of debris clogging the fuel line is not insulated, so no... The following issues: the fittings on the age of the lose plug wires of )! A serious topic off the full pump and the diaphragm seems intact its a lil worn Im! Bimini top She accelerated but then suddenly dips down at around 17000-21000 revs, then suddenly fly away your... Verified that the spark plugs are in good condition or need to be a fan moment line is also with.

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