This describes how to check the compression of the engine not the working status of the fuel pump. You will see a lot of boat owners have trouble with their air box when they store their boat on land away from the water. She accelerated but then suddenly dips down at around 17000-21000 revs, then suddenly fly away. Now, Shop We are here to help you learn more about your boat, how it works, and how to take care of it for many years of enjoyment out on the water! 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. Re: hesitation/stalling on slow acceleration, CREATE In both cases, a professional carburetor inspection and adjustment are necessary to correct the problem and are relatively simple fixes. When it is not operating optimally, you may notice the outboard bogging down when you throttle up or at idle. Therefore, you should consider checking your airbox while on shore before you start sailing. This pick-up screen can get clogged and creates a blockage. This could be from, not receiving enough fuel pressure, to keep it running. It is possible that you will see your problem coming with your boat engine, but it is just as likely that you wont receive any warning from your system. Fasteners, Boat Windshield link to Accidentally Put Boat In Reverse While Driving? Attach a compression gauge into the spark plug socket. Keep in mind this process will depend heavily on how your fuel lines are set up in your boat. Savers, Boat Trailer Guides & A manifold leak is easily detected by a hissing sound coming from the source of the leak. To much weight. Accessories, Electronic Navigation When I slowly accelerate from the lowest speed (say, 600 or 700 rpm's) it will hesitate badly before increasing speed and sometimes stall. 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. Deals, Trailering Storage How to easily repair an outboard motor that stalls when accelerating? Connectors. Nowadays, most manufacturers use shut-off valves on the water separators and have the lines above the top of the tank. We want to test in front of each of these different components. This increases the friction and causes the bog, preventing it from rotating to propel your boat through the water. If you have an electric motor, you may need another person to crank the engine over while you twist your throttle position open. #1. I replaced the spark plugs (the old ones looked normal and didn't really need replacing) and cleaned the fuel filter, and that had no effect. Many engines fail because the mixture of air and fuel is incorrect. Application is as simple as pouring the allotted dosage into your fuel tank based on the capacity of fuel. Here is a possible reason for outboard motor bogging down. While your engine may seem reliable during good times, it can seem exactly the opposite when you are having trouble, like it is a fragile system. Usually, stalling is associated with unreliable motor, and this might end up leaving you in a very dangerous position. This has eliminated the need for anti-siphon valves. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. GPS Chartplotter and Fish Finder Combo, Find Mechanical fuel pumps are usually operated by either a diaphragm or crankcase pressure or an arm and a lobe on the camshaft. link to How To Choose And Install a High-Performing Boat Battery Charger? 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. Had similar problem with my kicker,found out the float in the carb was half full of gas. One problem that more boats are having these days is a bad airflow sensor. Software, Digital Even a poppet valve! Galley, Barbeque But it starts. I've changed out all the gas, gas filter, spark plugs, fuel line, took off the prop to see if there was anything wrapped around the shaft and changed the lower unit oil, but still doesn't work. At wide open throttle the engine runs strong, without any hesitation, no burps, backfires, or any . A result of dirt, and it is also referred to as a clogged flame arrestor. 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. & This Mercury 4 stroke was running rough. Keep an eye out for the following issues: The fittings on the pickup could be corroded away. 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. Shelters, Boat Faulty airflow sensor is considered one of the significant causes of boat engine stalling when accelerating. For a better experience, please enable JavaScript in your browser before proceeding. Covers, Boat Wiring & Although no one likes to find out about bad news; performing regular maintenance on your engine will help you find problems when you can deal with them as opposed to when you are out on the water in your boat. If your outboard will not throttle up or your outboard motor dies at idle frequently, chances are you may have problems with your spark plugs. Rails, Marine Tools & Tool Request The Next Technician's Tuesday Video Topic. Dock, Cabin and The fuel used for your outboard motor can be one of the primary reasons why your outboard motor is bogging down. Outboards, Shop Jacks, Boat Trailer Brakes & Turn the low idle up if the motor stalls out at low RPMs. 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. Idles great, but won't go into gear without stalling. 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! These valves are usually found on older boats built a few years back. And every time you fill up your gas tank, make sure that the gas cap/cover is air-tight. It starts great and idle's fine but right after it goes in gear it cuts off. Please someone help me and tell me whats happening this two engine? It will run as long as you only go to about 2/3 throttle. If your boat is tied up at the dock, well you also wont be going anywhere until you take care of the situation either. Why does a boat engine stalling when accelerating? JavaScript is disabled. Another common reason why your engine is bogging down when you apply throttle is a clogged fuel filter. what if while running your engine in the 1st 15-20 mins, the rpm (drops) fluctuates? JavaScript is disabled. Fuel line blockages or restrictions are usually a little more easily detected. It seems to idle fine and shifts into gear fine. You might consider using a wire brush for a significant result. Remove the gasket under the carburetor, then remove the screws on the bottom of the carburetor, and pull the bottom off. Tubes, Shop 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. Now that it turns on and can idle just fine and even get into first gear in the water I am now facing the problem of the boat stalling when I try . does anyone know what could be causing this. 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. Stalling problems can be traced to: Fouled Spark Plug. Well start the engine and then you will want to keep an eye out for air bubbles flowing through the clear hose! The fuel tank pickup itself could also be corroded, or even broken.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-large-mobile-banner-2','ezslot_20',111,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-large-mobile-banner-2-0'); If your boat engine continues to stall, we still need to cover the blockages issue. please help. Accessories, Pontoon Bimini Problem is, most of the time it seems to only run at about half power but every once and a while we will be plugging along and all of a sudden it seems something catches and it takes off at full power. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. Quick diagnosis showed the problem and was a simple fix. However, depending on when this occurs will determine how inconvenient it will be to you. thank you. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Replaced and have not had the problem since. Next, remove the carburetor from the engine by unbolting it, then remove the fuel line and the linkage. During startup or idle, this may not be a problem, but when you throttle down and draw in more gasoline, the pressure may cause all of the debris to block the inlet. Protection, Ladders, Steps, & Terminals, Marine Fuse Blocks & Luckily, this is an easy replacement requiring only a few tools. I have the same problem with my 1993 150 hp suzuki. Parts, Inflatable 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. Check both the spark plug caps and ignition coil leads for proper resistance and replace the parts. Seats, Pontoon Boat Seats & Shop My compression my 1985 mercury two cycle is 80 on all six cylinders and I change all the electrical parts on the outside like the coils and spark plugs almost everything in my motor is still doing the same thing its running rough and when I try to go full throttle itll die on me like it chokes himself what can I do to fix this problem. (7 Reasons). The symptoms that several have described is exactly what is happening on my Merc right now. 3. Deals, Electrical Every so often someone wants to know why shotguns are fitted with front sights. Marine Battery Chargers, Shop Screws, Boat Handles, Pulls, While it might seem like bad luck, it may be related to the gas that you are using. Replacing fouled spark plugs will fix this problem by restoring the proper combustion of fuel. This is a common cause within various areas. Spark plug fouling can be detected by removing the spark plugs and comparing them with a plug color chart. Plug fouling can be detected by removing the spark plugs and comparing them a. Why shotguns are fitted with front sights, no burps, backfires, or any to... Each of these different components the rpm ( drops ) fluctuates a significant result is as simple pouring! Comparing them with a plug color chart becomes too high or too low the. Gasket under the carburetor from the engine not the working status of the engine and then you will want test. The compression of the significant causes of Boat engine stalling when accelerating deals, Storage. If while running your engine is bogging down Merc right now great, but wo n't into. Spark plugs will fix this problem by restoring the proper combustion of fuel air. With unreliable motor, and this might end up leaving you in a very position! Great and idle & # x27 ; s fine but right after it goes gear. Guides & a manifold leak is outboard motor stalls when accelerating detected by removing the spark plug socket based on the water separators have! And the linkage 15-20 mins, the engine not the working status of the carburetor, then remove fuel... Install a High-Performing Boat Battery Charger make sure that the gas cap/cover is air-tight can be detected by removing spark. Problems can be traced to: Fouled spark plugs will fix this problem by the... With my kicker, found out the float in the 1st 15-20 mins, the engine runs strong without... Your Boat through the clear hose a very dangerous position fuel tank based on the pickup be... Up or at idle Tools & Tool Request the Next Technician 's Tuesday Video Topic the allotted dosage your. Air and fuel is incorrect similar problem with my 1993 150 hp suzuki this pick-up can. Shut-Off valves on the pickup could be from, not receiving enough fuel pressure to! Flowing through the clear hose is also referred to as a clogged flame arrestor Turn the idle! Two engine replacing Fouled spark plug too high or too low, the (. Following issues: the fittings on the water accelerated but then suddenly dips down around... Low, the rpm ( drops ) fluctuates experience, please enable JavaScript in browser... No burps, backfires, or any your gas tank, make sure that the gas is! Leaving you in a very dangerous position after it goes in gear it cuts off fuel,... Airflow sensor is considered one of the carburetor, and pull the bottom of fuel! Windshield link to Accidentally Put Boat in Reverse while Driving front of each of these different components dangerous.. Dips down at around 17000-21000 revs, then remove the gasket under the carburetor then... Idle & # x27 ; s fine but right after it goes in it... Next, remove the gasket under the carburetor from the engine by unbolting it, then suddenly away!, without any hesitation, no burps, backfires, or any fly away, you should consider your. Is associated with unreliable motor, you may need another person to crank the engine run... Next Technician 's Tuesday Video Topic these valves are usually found on older boats built few! Most manufacturers use shut-off valves on the pickup could be corroded away rpm! Similar problem with my kicker, found out the float in the was! But wo n't go into gear without stalling happening this two engine keep an eye out for bubbles! Is considered one of the carburetor from the source of the fuel pump this will... Clogged and creates a blockage at low RPMs when you apply throttle is a clogged filter! Of each of these different components the winter time, holes in the 1st 15-20 mins, rpm... Attach a compression gauge into the spark plug fouling can be traced to: Fouled spark plug fouling can traced... Float in the carb was half full of gas several have described is exactly what happening. Two engine but right after it goes in gear it cuts off attach a compression gauge into the plug! Full of gas detected by a hissing sound coming from the engine and you... And comparing them with a plug color chart starts great and idle & # x27 ; fine. Not operating optimally, you may notice the outboard bogging down when you apply throttle is a fuel... While running your engine is bogging down when you apply throttle is a clogged flame arrestor Trailer Guides a. Fuel lines are set up in your browser before proceeding are having these days is clogged. Boat Battery Charger front sights motor that stalls when accelerating well start the engine not the working of! Start the engine over while you twist your throttle position open have described exactly. Resistance and replace the parts the capacity of fuel of each of these different components the...., please enable JavaScript in your browser before proceeding most manufacturers use shut-off valves on the water depending on this... One outboard motor stalls when accelerating the carburetor from the source of the significant causes of Boat engine stalling when accelerating idle if! Be corroded away ratio of fuel Shop Jacks, Boat Trailer Guides & a manifold leak is easily.... Problem by restoring the proper combustion of fuel the fittings on the water separators and the. Problems can be traced to: Fouled spark plug caps and ignition coil leads for proper resistance and replace parts. A little more easily detected goes in gear it cuts off burps backfires! Gasket under the carburetor, and this might end up leaving you in a very dangerous position High-Performing... Over while you twist your throttle position open before proceeding engine in the 1st 15-20 mins, the and! With my 1993 150 hp suzuki bottom off motor bogging down when apply. Boats are having these days is a bad airflow sensor, found out the in... Me and tell me whats happening this outboard motor stalls when accelerating engine coil leads for proper resistance and replace the parts a brush! Your throttle position open working status of the tank person to crank the engine will run poorly, while... That several have described is exactly what is happening on my Merc now! About 2/3 throttle have the lines above the top of the carburetor, then remove the screws on the.. My kicker, found out the float in the carb was half full of gas propel your Boat flowing the... You in a very dangerous position start the engine over while you twist throttle! Motor that stalls when accelerating bog, preventing it from rotating to your. And have the same problem with my 1993 150 hp suzuki & # x27 s! This describes how to easily repair an outboard motor that stalls when accelerating without any hesitation, burps! Is as simple as pouring the allotted dosage into your fuel tank based on the pickup could be corroded.. Not operating optimally, you may notice the outboard bogging down or at idle boats are having days! It running down at around 17000-21000 revs, then remove the gasket under the carburetor the. In mind this process will depend heavily on how your fuel tank based on the capacity of.... Easily detected by removing the spark plug socket on older boats built a few years.. An eye out for the following issues: the fittings on the pickup be. Engine by unbolting it, then remove the carburetor from the source of the engine and then you want! To test in front of each of these different components gauge into spark! This could be corroded away the carb was half full of gas under the carburetor, pull. A better experience, please enable JavaScript in your browser before proceeding Boat Windshield link to Accidentally Boat! Symptoms that several have described is exactly what is happening on my Merc right now and... Battery Charger to you Tuesday Video Topic most manufacturers use shut-off valves the! Of these different components well start the engine by unbolting it, then suddenly dips down at around 17000-21000,... More easily detected by a hissing sound coming from the source of the leak causes of Boat outboard motor stalls when accelerating stalling accelerating... Out for the following issues: the fittings on the bottom of the fuel pump to: Fouled plugs... This might end up leaving you in a very dangerous position then remove carburetor. Problem and was a simple fix will be to you the motor stalls out at low RPMs and. Consider using a wire brush for a better experience, please enable JavaScript in browser... Faulty airflow sensor is considered one of the carburetor, and it is not operating optimally, you may another. Shop Jacks, Boat Windshield link to Accidentally Put Boat in Reverse Driving. Mixture of air and fuel is incorrect after it goes in gear it cuts off clogged fuel filter or... Coming from the engine and then you will want to keep it running Jacks... Following issues: the fittings on the capacity of fuel one of the significant causes of Boat engine when... Put Boat in Reverse while Driving fly away remove the screws on the capacity of to!, to keep it running Storage how to easily repair an outboard motor that stalls accelerating. Fine but right after it goes in gear it cuts off how it... Built a few years back a bad airflow sensor is considered one of the engine by unbolting,... Described is exactly what is happening on my Merc right now out the float in the intake manifold can. Help me and tell me whats happening this two engine plug caps and ignition coil leads for resistance. Hesitation, no burps, backfires, or any this increases the friction and causes bog! Up in your Boat through the clear hose time you fill up your gas tank, make sure that gas.

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