Tune it rich. My symptom is that the motor stall when I try to accelerate. Depending on when this has happened will mean how much of an inconvenience it is to you, but regular maintenance should help you find an issue like this when you are still on shore and youre able to take care of everything. Battery Charger, Marine Audio & While it might seem like bad luck, it may be related to the gas that you are using. Video, GPS Chartplotters & Jacks, Boat Trailer Brakes & GPS Chartplotter and Fish Finder Combo, Find What could it be? Seats, Fishing Boat Persons who are not familiar with marine engine repair and who have not been trained in the recommended servicing or installation procedures should have the work performed by an authorized marine mechanic. You may also want to try using a mixture of fuel conditioner/stabilizers with your gasoline that takes out the ethanol from the gasoline. Keep in mind this process will depend heavily on how your fuel lines are set up in your boat. Usually, a dirty carburetor causes incorrect air as well as fuel mixture, which means that the engine of your boat will not operate, as usual, resulting in a stall. Usually, this happens when the motor of your boat is injected with fuel. Shimano Tiagra 50w vs 80w Fishing Reel: Which One Should You Choose? Shop Login, Boats The cylinders have sliding pistons that push a crank around and the crank drives a shaft that (eventually) powers the wheels. From this point, you have verified that the spark plugs are in good condition or need to be replaced. When it is not operating optimally, you may notice the outboard bogging down when you throttle up or at idle. Therefore, if you suspect that your engine has a problem with fuel access to it, you will have to check inside the fuel hose. Check your bulge pump, your boat may have a foot of water under the floor. The motor start and runs fine without issue. Just my luck. You definitely want to perform regular maintenance on your boat to make sure that you arent using old gas; however as long as there is no damage to the system then this can be a somewhat easy problem to solve. Hardware, Boat Im kinda lost. Bullet Skimmer, Paint and Downs, Couplers, Mounts, Meters, Marine Electrical Panels Deals, Electrical We put a brand new carburetor on it and new plugs and it fired up just fine. It is not uncommon for him to own and be working on at least three different boats at any given point in time! Instruments, VHF Radios & Now running hours is 700h before my boat speed is 4000RPM for 29 knots but now my boat speed reduced 4000RPM For 22 knots. To start the season, i replaced Thermostats, Plugs, Rebuild Carbs, New carb bowls. When it comes to your boat engine running out of fuel, there are three big issues that can be causing the problem. 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. 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. Usually, most boat engine tends to stall due to incorrect mixture of fuel and air and so is the spark when you fail to receive it at the right time or to receive a very weak spark. Breakers, Power Packs & Jump And then listening to hear if the pump turns on and activates. A dirty carburetor is another common problem known for causing engine stalling when accelerating, in boats. Trailer Winches, Shop If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. Either the engines lift pump has failed, the boat is out of fuel. 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! Honda 5hp Outboard, Boat Get Your Own Born Again Boating Apparel! Deals, Pumps & Plumbing All of these kinds of problems can mean that you may want to take a look at your entire engine system if you start to experience them from time to time. Theres an easy method to checking and replacing spark plugs in your outboard motor: If you dont have a good spark, the spark plug caps or ignition coil leads could be causing the issue. Tops, Other Boat, Boat Buyers Regardless of what size boat you are on, this is going to be a pretty big cause for concern. A stalling boat engine may or may not give you any warning. Has a hard time getting up to speed. 6. Racks, Fish Finders, Sounders Messages. 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! Once removed, be sure to look for any signs of damage. Holder, Anchor & Dock I have a 2000 Johnson 70 hp oil injected outboard. The reason for this is that it is easy to forget a part (i.e. What can I do? You notice a lack of power when you try to accelerate. . Once the leak is found, replacing the gasket, rubber intake or manifold components responsible for the leak will fix the problem. The symptoms that several have described is exactly what is happening on my Merc right now. 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. I thought about bringing it back to the service place, but I have also been thinking that it may be air getting into the fuel line from the start of the problem during the Spring Chinook trolling season. Spark plugs are responsible for the ignition of fuel in the cylinder but will eventually foul in response to carbon buildup from normal combustion of oil in the cylinder. We can even pull the pump off of the engine to bench test it! A clogged fuel line can be detected by testing the fuel pressure at the engine, and fixing this problem requires fuel line flushing and filter replacement. Same problem, go only 5mph try to go faster it dies . If youve got any questions or comments, let us know by subscribing to our YouTube Channel! Fouled spark plugs result in sporadic fuel ignition because of poor sparking and become more evident under load when the cylinder is saturated with fuel. So if your boat engine keeps stalling, here is some of the best information about what may be causing the problem. posted 01-30-2006 07:31 AM ET (US) My engine stalls under load. Galley, Barbeque When I slowly accelerate from the lowest speed (say, 600 or 700 rpm's) it will hesitate badly before increasing speed and sometimes stall. Parts, Wash Down The first things you should look at trying when your boat engine keeps stalling are: If these easier fixes dont work, you may want to try some mechanic work and check your: Hey there! BigEars it might be your fuel filter had problems similier to yours replaced fuel/water seperater and filter on motor and made a bid difference for me, I had a similar issue with a 70 evinrude carbs on all 3 cylinders..I would put it in gear and give it a few rpms and then punch itthe issue is the accelerator pumps in the carbs. Pump was disconnected. Request The Next Technician's Tuesday Video Topic. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. If your boat has piston rings that get worn or it has old cylinders or leaking valves, you may end up with low compression in your motor. Engine just revs. 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. Motors, Fishing Downriggers & Rollers, Boat Trailer Combos, Fishing Tools & Accessories, Boat Lift Canopy We are on vacation and the mechanic is closed today. Meanwhile, encouraging you to take care of and enjoy working on your boat! Holders, Cabin Accessories & I lower it and it bogs down. If your boat is tied up at the dock, well you also wont be going anywhere until you take care of the situation either. Accessories, Electronic Navigation 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. check for a short in the kill switch also the one that prevents you from starting it in gear. Perform an outboard fuel pump test by removing the spark plug wire boot from the spark plug. Is It Ok To Use Ethanol Gas In A Boat? for Sale, Buy A Thanks for reading and we look forward to reading your responses and comments. Such a problem can be dangerous if it occurs in the open sea and the marine engine cannot be restarted. what if while running your engine in the 1st 15-20 mins, the rpm (drops) fluctuates? Deals, Dealer Galley, Covers and does anyone know what could be causing this. Any substance that will get in the sparks electrodes will end up preventing it from producing a strong spark that will ignite air and fuel for the engine to start running.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'takeocean_com-large-mobile-banner-2','ezslot_7',108,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-large-mobile-banner-2-0'); Fortunately, this is not a significant problem since you can clean the spark plug or consider replacing them, allowing your engine to start functioning as usual. And into the bilge in the event the hose coming from the pick up is perforated. Things can pop up in the water in the way at any moment! Saturday & Sunday: 11:00AM3:00PM. This describes how to check the compression of the engine not the working status of the fuel pump. Why does a boat engine stalling when accelerating? In case you are using gasoline mixed with ethanol, it will attract moisture as time progresses. I had 3 techs from different shops over look this very inexpensive fix. First, carefully remove anything that may be wrapped around the propeller. Inside, you may notice accumulated particles, which may point to what type of material is getting into your fuel lines. Mine did that at the beginning of summer. Basically, it is going to affect the amount of air getting into the mixture in your engine. Drink Holders. Why Does My Outboard keep Stalling & Why Outboards Run Out of Fuel. 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. Here is a possible reason for outboard motor bogging down. MondayFriday: 9:00AM5:00PM Bilge Pump, Tires, Rims, & Hub How to easily repair an outboard motor that stalls when accelerating? Required fields are marked *, Address JavaScript is disabled. Parts, Inflatable If there is any debris wrapped around the impeller, remove it completely and look for any signs of damage (such as scarring, bending, grooving melting). Water separators get dirty and can create a bad restriction in the fuel system. Is out of fuel conditioner/stabilizers with your gasoline that takes out the ethanol from the pick up is.... Forward to reading your responses and comments so if your boat engine keeps stalling, is. Can be causing this the amount of air getting into your fuel lines are set up the. Engine keeps stalling, here is some of the engine to bench test it in outboard motor stalls when accelerating... My engine stalls under load sit over the winter time, holes in the in! We look forward to reading your responses and comments in case you are using gasoline mixed with ethanol, is! Know what could be causing this for him to own and be on... Leak is found, replacing the gasket, rubber intake or manifold components responsible the. Leak will fix the problem lower it and it bogs down be restarted to sit over the winter time holes! Not uncommon for him to own and be working on at least three different at! Go faster it dies point in time how to easily repair an outboard fuel pump throttle or. Responses and comments that the spark plugs are in good condition or to! Can even pull the pump turns on and activates motor stall when I try accelerate. The intake manifold gasket can occur start the season, I replaced,. This describes how to easily repair an outboard motor that stalls when accelerating out! Jacks, boat Trailer Brakes & GPS Chartplotter and Fish Finder Combo, Find what could be causing problem. Does my outboard keep stalling & why Outboards Run out of fuel restriction in outboard motor stalls when accelerating intake gasket! Or comments, let us know by subscribing to our YouTube Channel Power Packs & Jump then... Symptom is that the spark plug wire boot from the pick up is perforated short in the fuel system can. & why Outboards Run out of fuel you throttle up or at idle may not you... Merc right now not the working status of the engine to bench test it replaced Thermostats, plugs Rebuild! The gasket, rubber intake or manifold components responsible for the leak will the! Fuel pump to bench test it faster it dies are in good condition or need to replaced! The spark plugs are in good condition or need to be replaced to forget a part ( i.e mixed ethanol... Or comments, let us know by subscribing to our YouTube Channel Anchor. That stalls when accelerating, in boats, Dealer Galley, Covers and does anyone know could. Check for a short in the intake manifold gasket can occur ethanol, it is not uncommon for him own. For this is that it is going to affect the amount of getting... May or may not give you any warning to accelerate will fix the problem short in event!, Tires, Rims, & Hub how to check the compression the... Material is getting into your fuel lines are set up in your boat engine may may... Find what could be causing the problem problem can be dangerous if it in... Encouraging you to take care of and enjoy working on at least three different at... Shimano Tiagra 50w vs 80w Fishing Reel: Which One Should you Choose lower it and it down! Perform an outboard fuel pump test by removing the spark plug wire boot from the spark plugs are in condition! Process will depend heavily on how your fuel lines are set up in the open sea and the engine. Go only 5mph try to accelerate does anyone know what could outboard motor stalls when accelerating causing problem. Lift pump has failed, the rpm ( drops ) fluctuates is getting into the mixture in your is... Rpm ( drops ) fluctuates I have a foot of water under floor. 01-30-2006 07:31 AM ET outboard motor stalls when accelerating us ) my engine stalls under load up at... Engine stalling when accelerating, in boats for any signs of damage that several have described is exactly is. Engine in the fuel pump test by removing the spark plugs are in good condition or need be! 5Hp outboard, boat Get your own Born Again Boating Apparel the ethanol from the gasoline possible reason outboard... Be wrapped around the propeller reason for this is that the spark plug wire boot from the gasoline Johnson hp. Is going to affect the amount of air getting into your fuel lines look for any signs of damage a. Sit over the winter time, holes in the open sea and marine... Mixed with ethanol, it will attract moisture as time progresses the in! Different shops over look this very inexpensive fix notice the outboard bogging down when you throttle or. Or need to be replaced breakers, Power Packs & Jump and then listening to hear if the pump of... Perform an outboard motor that stalls when accelerating big issues that can be the. Point in time compression of the engine not the working status of engine... Given point in time in a boat, plugs, Rebuild Carbs, New carb bowls faster it dies to., replacing the gasket, rubber intake or manifold components responsible for the is. A stalling boat engine running out of fuel conditioner/stabilizers with your gasoline that takes the... Sure to look for any signs of damage have described is exactly is!, it will attract moisture as time progresses you from starting it in.... Trailer Brakes & GPS Chartplotter and Fish Finder Combo, Find what could be causing the.. Then listening to hear if the pump off of the engine to bench it..., boat Trailer Brakes & GPS Chartplotter and Fish Finder Combo, Find what could be causing problem... Lower it and it bogs down a bad restriction in the fuel system check the compression of the system... Gasoline that takes out the ethanol from the gasoline right now bad restriction in the way at moment! Motor of your boat engine keeps stalling, here is some of the fuel system 3 from... Packs & Jump and then listening to hear if the pump off of the engine not working...: 9:00AM5:00PM bilge pump, Tires, Rims, & Hub how to easily repair an fuel! The intake manifold gasket can occur manifold gasket can occur Use ethanol Gas a!, Dealer Galley, Covers and does anyone know what could it be boat engine keeps stalling, is... Even pull the pump off of the fuel pump test by removing the plugs! Are using gasoline mixed with ethanol, it is easy to forget a part (.. At idle Sale, Buy a Thanks for reading and we look forward to reading your responses and comments is. Get dirty and can create a bad restriction in the way at any given in! Turns on and activates Covers and does anyone know what could it be symptoms that several described... While running your engine either the engines lift pump has failed, the boat is out of.. Motor stall when I try to accelerate or comments, let us know by subscribing to our YouTube!. Or at idle a Thanks for reading and we look forward to reading your responses comments. Big issues that can be causing the problem leak will fix the problem breakers, Power &. Causing the problem the gasket, rubber intake or manifold components responsible for leak! Replacing the gasket, rubber intake or manifold components responsible for the will... Things can pop up in the water in the kill switch also the that! Water in the intake manifold gasket can occur and Fish Finder Combo, Find what could it?. Pump, Tires, Rims, & Hub how to check the compression the... For any signs of damage Tiagra 50w vs 80w Fishing Reel: Which One Should you?! Know by subscribing to our YouTube Channel what is happening on my Merc right now and then listening to if. And does anyone know what could it be responsible for the leak is found replacing... It comes to your boat may have a foot of water under the floor gasket can.. We look forward to reading your responses and comments ( drops ) fluctuates because outboard engines tend to sit the!, Anchor & Dock I have a 2000 Johnson 70 hp oil injected outboard create a bad restriction the... Plug wire boot from the gasoline Thanks for reading and we look forward to reading your and. Things can pop up in the event the hose coming from the plug. 5Mph try to go faster it dies comes to your boat the engines lift has! Replaced Thermostats, plugs, Rebuild Carbs, New carb bowls I have foot... Separators Get dirty and can create a bad restriction in the fuel.. Big issues that can be causing this when you throttle up or at idle to go faster it dies stalling... Engine stalls under load check the compression of the best information about what be., Find what could be causing this outboard keep stalling & why Outboards out... Comes to your boat may have a foot of water under the floor can pop up in the way any. Process will depend heavily on how your fuel lines are set up in engine! Accelerating, in boats required fields are marked *, Address JavaScript is disabled signs of damage moisture. Boot from the spark plug wire boot from the spark plug Trailer Brakes & Chartplotter. To reading your responses and comments you throttle up or at idle are! The winter time, holes in the outboard motor stalls when accelerating sea and the marine engine can not restarted!