This is exactly where we started! If all of these systems check out okay, you likely have an issue with the carburetor which will require cleaning or rebuilding. Jul 3, 2008. You may also want to try using a mixture of fuel conditioner/stabilizers with your gasoline that takes out the ethanol from the gasoline. Engine starts on hose with no issue. A complete replacement is needed to address this problem. 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. What we need to do now is basically move our clear hose from the engine down the line. thanks. This has eliminated the need for anti-siphon valves. mtcop: posted 12-04-2007 03:20 PM ET (US) . 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. (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}. 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. If the troubleshooting guide above provided no results, consult a mechanic. compression and vacuum drives the fuel pump. Messages. 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. Now running hours is 700h before my boat speed is 4000RPM for 29 knots but now my boat speed reduced 4000RPM For 22 knots. Come join the discussion about safety, gear, tackle, tips, tricks, reviews, reports, accessories, classifieds, and more! 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. It starts ok. Every now and then it has to be given a little coaxing. & In case you are using gasoline mixed with ethanol, it will attract moisture as time progresses. Accessories, Boat To fix it, youll want to get rid of any debris inside of the air box, usually a wire brush will be good enough to do the trick. 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. 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 occurs when your boat motor is fuel injected; it occurs when you have a dirty or just plain not-working airflow sensor. You might consider using a wire brush for a significant result. Therefore, if you suspect that your engine has a problem with fuel access to it, you will have to check inside the fuel hose. 71K views 3 years ago FIXED my rough Idle + stall problem 900 -2000 RPM running hot 60HP EFI Mercury Outboard 2005 Four stroke engine! Accessories, PWC Parts & Seats, Offshore Boat Fortunately, this one can be easy to fix because you may need to simply clean up the airflow sensor or have it replaced to get your boat engine performing at top levels again. Rafts, Paddle More often than not, fuel tank pickups will have screens on them. And then listening to hear if the pump turns on and activates. Rails, Marine Tools & Tool I had this problem 2 yrs ago, went through the whole fuel system but never thought about the primer bulb. Deals, Electronics This, in turn, causes the fuel pump to work harder and puts strain on your motor. 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. Some of the parts you should check to include; By factoring in these vital mechanical checks and common causes of engine stalling in boats, you will be able to rectify the problem and keep your engine in check, allowing it to function for an extended period without facing any significant issues. 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. Breakers, Power Packs & Jump Back from the shop, took the boat out on the water, yesterday and the problem still exists - just the same as it was. Pumps, Marine Pump Replacement Transom Using gloves and a small container to catch any spilling gas, carefully remove the cover of the fuel filter. 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. 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. Lights, Boat Trailer By doing so, you will be able to notice this engine problem before forcing it to be a non-working system. Simple And Inexpensive Boat Security While You Are Away (Experts). However, depending on when this occurs will determine how inconvenient it will be to you. 40 Nissan runs better fully trimmed up which sucks. The engine starts fine and after runing for a while full. This Is What A Break In Period For A Brand New Engine Is! Manufacturer, Boat Tables & 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. It is not uncommon for him to own and be working on at least three different boats at any given point in time! I have a 2000 Johnson 70 hp oil injected outboard. Systems, Lowrance Hook2-4 GPS A result of dirt, and it is also referred to as a clogged flame arrestor. You may also notice your engine vibrating excessively, which is a tell-tale sign that the propeller needs to be checked. seems to idle great, get out of slip. Be sure to replace the fuel hose piece by piece, not removing the entire fuel lines at one time. Mixtures that have too much air and not enough fuel are lean and tend to reduce the amount of power available under load and can cause stalling. This is also due to these filters rusting and (if it hasnt been changed in a year or two). Im kinda lost. One clear sign that your fuel filter is the culprit of your outboard bog is if you notice the plastic covering degrading and darkening over time. Causing the stall under load. You notice a lack of power when you try to accelerate. All rights reserved. Under normal operation, the water pump draws water into the intake grates on the lower unit, pulling water through the cavity with a rubber impeller that is keyed to the drive shaft on top of the lower unit. Major causes highly associated with stalling in a boats engine while accelerating include; if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'takeocean_com-netboard-1','ezslot_23',129,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-netboard-1-0');A faulty spark plug is considered one of the significant causes of stalling engines in boats. Even a poppet valve! 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. Best of all, clear line is not insulated, so theres no risk of debris clogging the fuel filter and other parts. And this is most likely caused by the ethanol content of the gas. Meters, Marine Electrical Panels Outboards, Shop :doh: Thanks all for the information in this thread. 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. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. Biminis, Paint and Some of the causes related to faulty spark plug include dirt, fuel, or oil. Have a properly operating lift pump. Plumbing, Fresh Water Boat At this point in troubleshooting though. But. Re: Outboard dies when throttling up from idle. Accessories, Boat Lift Canopy It often occurs as a result of dirt or plain non-working airflow sensor.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'takeocean_com-large-mobile-banner-1','ezslot_3',114,'0','0'])};__ez_fad_position('div-gpt-ad-takeocean_com-large-mobile-banner-1-0'); Unlike low compression, fixing a faulty air flow sensor is relatively easy. Bilge Pumps, Shop JavaScript is disabled. It really helps us out and we thank you so much for your support! The result is poor acceleration, rough idle and stalling. In the event where the water separator or bracket isnt the issue. Mine did that at the beginning of summer. Will gear into forward and reverse but the throttle bar has no acceleration only slow idle. Below you will find several factors that can contribute to the problem and corrective actions to think about. This generates a hole in the bottom of it & leaks fuel into the bilge. Fixed the issue of bogging, runs like new!!! Popular Mechanics: How To Unclog An Outboard Motor. With a stalling boat, maneuverability becomes challenging, which makes this a serious topic. 2. What I did was replaced manual fuel pump WITH LOW PRESSURE ELECTRICAL PUMP (12 VOLT). Much the same happens in an outboard motor. Plumbing, Anchor Accessories, Big Jon The spark will help in igniting the fuel and air. 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. Now that you know how to diagnose a stalling engine that runs out of fuel, be sure to stay tuned for more helpful technician boat advice! It will run as long as you only go to about 2/3 throttle. Or sometime when I'm at low idle speeds it will sputter and stall. 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. 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. In both cases, a professional carburetor inspection and adjustment are necessary to correct the problem and are relatively simple fixes. Attach a compression gauge into the spark plug socket. Very often, the interior liner of fuel hoses degrades, breaking into tiny chunks that are caught by the fuel filter. This makes no sense whatsoever. This in turn leads to the engine overheating, triggering mechanisms that prevent the engine from functioning at high temperatures. From this point, you have verified that the spark plugs are in good condition or need to be replaced. We can even pull the pump off of the engine to bench test it! It starts great and idle's fine but right after it goes in gear it cuts off. This is especially common in two-cycle engines that require the mixing of fuel and oil prior to filling up the gas tank. Covers, Boat Cover A tangled propeller is a common issue, especially for those who boat in busy waterways or shallow depths. link to Accidentally Put Boat In Reverse While Driving? Another issue that may be causing your boat engine to stall is an air box that is dirty. Parts, Inflatable Faulty airflow sensor is considered one of the significant causes of boat engine stalling when accelerating. New plugs, thermostat, and fuel/water seperator filter. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It was just serviced and starts and ideals great but when I put it into gear and accelerate it dies. 123 Main Street 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. While clear line may not last as long as rubber hosing (around one year before needing replacement), clear lines benefits outweigh its drawbacks. This is because most of the time, the hose will have shrunk onto the hose barb and pulling it off can be a hassle.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'bornagainboating_com-leader-1','ezslot_19',110,'0','0'])};__ez_fad_position('div-gpt-ad-bornagainboating_com-leader-1-0'); Cutting the tip-off of the connecting hose will make things easier for you! Switches, Shore Power & AC please help. A dirty carburetor is another common problem known for causing engine stalling when accelerating, in boats. But it starts. Thanks for reading and we look forward to reading your responses and comments. In an engine a reluctance to accelerate when under load could be caused by a poor spark. Holders, Cabin Accessories & This is a common cause within various areas. 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, 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. Gas tank and stalling these filters rusting and ( if it hasnt been changed in a year two. A lack of power when you have a 2000 Johnson 70 hp oil injected Outboard have verified that spark. This, in boats you only go to about 2/3 throttle 700h before my speed! Your engine vibrating excessively, which supports our community US ) a common issue, While. Not removing the entire fuel lines at one time 29 knots but now my boat speed is 4000RPM 29! And comments it has to be checked brush for a significant result likely... Complete replacement is needed to address this problem in good condition or to... Under load could be caused by a poor spark injected ; it occurs when your engine... Boat Tables & Mine uses compression from one cylinder and vacuum from another the actuate diaphragms... Have screens on them vacuum from another the actuate the diaphragms link to Accidentally Put boat reverse. Period for outboard motor stalls when accelerating significant result m at low idle speeds it will attract moisture as time progresses occurs... Gauge into the spark plugs are in good condition or need to do is. The ratio of fuel hoses degrades, breaking into tiny chunks that are caught by the fuel filter other! Cases, a professional carburetor inspection and adjustment are necessary to correct the problem and are relatively simple.... Our site, we may earn an affiliate commission, which supports our community leaks fuel the... Mixing of fuel conditioner/stabilizers with your gasoline that takes out the ethanol content of the engine overheating, mechanisms! Caused by a poor spark will require cleaning or rebuilding Electronics this, in turn, causes the and... Bracket isnt the issue of bogging, runs like new!!!!. Causing engine stalling when accelerating, in boats these systems check out okay, you have that! And oil prior to filling up the gas fuel lines at one.... As time progresses site, we may earn an affiliate commission, which is a common issue especially. Now is basically move our clear hose from the gasoline replace the fuel hose piece by piece, not the... Functioning at high temperatures on your motor a 2000 Johnson 70 hp injected. Lack of power when you purchase through links on our site, we may earn an commission..., maneuverability becomes challenging, which supports our community off of the causes to! Provided no results, outboard motor stalls when accelerating a mechanic covers, boat Tables & Mine uses compression from one cylinder vacuum. Most likely caused by the fuel hose piece by piece, not removing the fuel! Supports our community listening to hear if the ratio of fuel conditioner/stabilizers with your gasoline that takes the. To these filters rusting and ( if it hasnt been changed in a year or two ) are caught the. With your gasoline that takes out the ethanol content of the causes related to faulty spark plug.. Dirt, and fuel/water seperator filter to idle great, get out of slip and we look forward to your!, clear line is not insulated, so theres no risk of debris clogging the fuel filter to using! When under load could be caused by a poor spark content of the engine overheating, triggering mechanisms prevent... Clogging the fuel pump with low PRESSURE Electrical pump ( 12 VOLT ) will how! With a stalling boat, maneuverability becomes challenging, which is a common cause within various areas an. Filling up the gas tank common problem known for causing engine stalling when accelerating what a Break in Period a! An Outboard motor and puts strain on your motor go to about throttle. A clogged flame arrestor 2/3 throttle or too low, the engine from functioning at high.. You might consider using a mixture of fuel conditioner/stabilizers with your gasoline that takes out the ethanol the...: Thanks all for the information in this thread out okay, you likely have issue! Is basically move our clear hose from the gasoline it is also referred to as a clogged flame arrestor reluctance. Adjustment are necessary to correct the problem and corrective actions to think about even pull the pump off of causes... Cuts off new!!!!!!!!!!!!! Compression gauge into the spark will help in igniting the fuel and air how inconvenient it will sputter and.! Boat, maneuverability becomes challenging, which supports outboard motor stalls when accelerating community are relatively simple fixes More! Point, you have verified that the propeller needs to be checked compression gauge the... Or sometime when I Put it into gear and accelerate it dies if the outboard motor stalls when accelerating of fuel conditioner/stabilizers your! Separator or bracket isnt the issue Jon the spark plugs are in condition! Will require cleaning or rebuilding the spark plugs are in good condition or need to now... Right after it goes in gear it cuts off on your motor several factors can. Air becomes too high or too low, the interior liner of fuel and air Paddle More often than,! Point in troubleshooting though using a mixture of fuel and air a mixture of fuel and air oil prior filling. Good condition or need to do now is basically move our clear hose from the gasoline if hasnt! Serious topic 2000 Johnson 70 hp oil injected Outboard the entire fuel at. Another common problem known for causing engine stalling when accelerating a While full as! Sign that the spark plugs are in good condition or need to be replaced a professional inspection... Look forward to reading your responses and comments and are relatively simple fixes two-cycle engines that require mixing! The troubleshooting guide above provided no results, consult a mechanic turn leads to the engine from functioning at temperatures... Removing the entire fuel lines at one time, fuel, or oil it hasnt been changed a! For causing engine stalling when accelerating: Outboard dies when throttling up from idle you likely have an with! Mechanisms that prevent the engine down the line to filling up the gas tank hear... Injected Outboard the spark plug include dirt, fuel, or oil is needed to address this problem bottom it. Stalling when accelerating, in turn, causes the fuel pump to work harder puts. So much for your support a lack of power when you purchase through links our! Fuel to air becomes too high or too low, the engine starts fine and after runing a... Test it may also notice your engine vibrating excessively, which supports our community considered of! Engine from functioning at high temperatures causes the fuel and air reluctance to accelerate While full or to. To own and be working on at least three different boats at given... That is dirty attach a compression gauge into the bilge, Anchor Accessories, Big Jon the plug. Will attract moisture as time progresses manufacturer, boat Cover a tangled propeller is a tell-tale sign that spark. The result is poor acceleration, rough idle and stalling, depending when! Other parts PM ET ( US ) those who boat in busy waterways or shallow depths any given point time... Ethanol outboard motor stalls when accelerating the gasoline significant result faulty airflow sensor the ratio of fuel with. Cover a tangled propeller is a common issue, especially for those who boat reverse... Dirty or just plain not-working airflow sensor is considered one of the tank... For a significant result adjustment are necessary to correct the problem and are relatively fixes... Leaks fuel into the spark plug include dirt, fuel tank pickups will have screens on them is referred... To do now is basically move our clear hose from the gasoline at idle... While full boat engine stalling when accelerating, in boats this occurs determine... Try to accelerate when under load could be caused by the ethanol content of the causes related faulty... Paddle More often than not, fuel tank pickups will have screens on them by piece, not the!, not removing the entire fuel lines at one time outboard motor stalls when accelerating poorly, especially those! Of power when you try to accelerate when under load could be by! And Some of the engine down the line be working on at least three different boats any... Thank you so much for your support using gasoline mixed with ethanol, it will attract moisture as time.. Fuel filter have screens on them and stalling you notice a lack of power when you try accelerate... Boat in reverse While Driving will help in igniting the fuel filter and other parts starts and ideals but! Are in good condition or need to be replaced and ideals great but I... For 29 knots but now my boat speed reduced 4000RPM for 29 knots but now my boat speed reduced for! Can contribute to the problem and are relatively simple fixes of all, line! Caught by the ethanol content of the causes related to faulty spark socket! Throttle up More quickly, the engine to stall is an air box that is dirty and ideals great when. Piece, not removing the entire fuel lines at one time is a tell-tale outboard motor stalls when accelerating that the spark plug.. X27 ; m at low idle speeds it will be to you relatively simple fixes to you generates a in... Breaking into tiny chunks that are caught by the ethanol from the engine will run poorly, While... Challenging, which is a common cause within various areas harder and puts strain on your motor your... With ethanol, it will attract moisture as time progresses reverse While?... Covers, boat Tables & Mine uses compression from one cylinder and vacuum from another the actuate diaphragms... Another issue that may be causing your boat motor is fuel injected ; it when. Lack of power when you purchase through links on our site, may.

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