It also stalls when trying to accelerate. It runs great at a low idle and can accelerate to high RPM under no load. New carb kits installed, link and synk, good comp and spark, fuel system ok. I really wanna take the boat out and do some fishing. I would say dirty carbs. Once the leak is found, replacing the gasket, rubber intake or manifold components responsible for the leak will fix the problem. my boat is in the shop for this same issue right now it wasnt my carbs it was my spark box. Fuel filters help reduce this problem by filtering particles from the fuel before they can reach small, easy-to-clog lines. Do not overlook a sticking timer base that also affects acceleration. Honda's 9. I had the same problem this week. 5) Acceleration Issues I have a 2 stroke 25 hp tohatsu outboard. If this is a two stroke, change the plugs. If I nudge it up slowly, eventually I can get [the boat] on aplan and run like heck. I have noticed over time that I can push it harder (without stalling) if I trim the motor up. it has new gas, new filter and the carbs were just cleaned. Hammer down throttle and she starts to go on plane, then dies. Advertise for FREE today! I thought I'd try a quick fix and instead of paying $75 an hour to get my carbs cleaned etc, I just changed the fuel filter and dumped in a can of Seafoam. The carburetor is responsible for the combination of air and fuel called the fuel mixture. After that it would only run at idle and if I give it any amount of gas the RPMs would increase for about 5 seconds or so and the motor would … I've been having problems out of my 1995 Mercury outboard [accelerating under load]. Justin Chen is a freelance writer and photographer with 6 years of professional experience in outdoor activities, extreme sports, travel and marketing topics. A stalling boat engine may or may not give you any warning. Assuming that the ignition system is in tip-top shape, that sounds like a fuel related issue. Eventually it stalls, but I can almost get on plane … Then the motor stalls when I try to accelerate. Nothing can ruin a day on the water like a marine engine that stalls. Spark plug fouling can be detected by removing the spark plugs and comparing them with a plug color chart. We are on vacation and the mechanic is closed today. Outboard motor stalls when accelerating - dn.flightaviation.it Motor idles great and idles good at low take off speed but as soon as i give it full throttle the motor boges down and stalls if not placed in neutral. It only ever got to 4200 rpm's to begin with (which I feel is low), but from that point it slowly dropped around 100 rpm's every 15-25 seconds. A manifold leak is easily detected by a hissing sound coming from the source of the leak. Model number J35QLEUR. 135 Mariner stalls on acceleration. If it does stall it will start back up ok and idle good. When you come back to an idle, it will idle high (1400 rpm) when put in gear, it surges … A vibration that occurs at low speed is fairly common and is the result of a resonance in the system formed by the propeller, the motor, the motor … Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. The tiniest of leaks can cause engine performance problems. Always Start with the cheap stuff. About a month ago I spent 5 days trolling with my 2006 etec 90 hp. REPORT ABUSE. Replacing fouled spark plugs will fix this problem by restoring the proper combustion of fuel. after his trip, the boat will start for a couple minutes and will stall. In the old days, there used to be a cable that was connected from the throttle to the accelerator. Will putt along contededly, but stalls when I push down the lever. If I backed off the throttle it would run. 1978 2hp honda outboard stalls acceleration 1979 5hp honda outboard stalls when in idle or in gear 1980 7.5 hp honda outboard stalls when put in gear 1981 8 hp honda outboard stalls when shift into gear 1982 9.9hp honda outboard stalls when throttling forward 1983 9.9 honda outboard stalls shift 1984 honda 15 hp outboard stalls … I will start at the beginning. http://www.mertenmarine.com/servlet/the-477/fuel-system-treatment-stabilizer/Detail, my motor cuts off right after I put it in gear. Problems with the delivery of any of these combustion components can cause an engine to stall while under acceleration. Motor started fine, idled fine, but when I gave it some gas it wanted to die. As the leak gets worse, the car will begin to stall. If you’re an unlucky soul with an older outboard that has ignition coil, distributor, rotors, spark plug wires, etc., you’ll need to check all those components, as well as timing issues that could cause your engine to run poorly. This motor is Chinese junk, apparently this is the only Honda outboard that is manufactured in China. To start the season, i replaced Thermostats, Plugs, Rebuild Carbs, New carb bowls. Problem: Engine Will Not Accelerate. Each had unique engineering specs, power capabilities and intended uses. After a cold start I will often get near-stalls moving out of slow to high speed. A manifold leak is easily detected by a hissing sound coming from the … low fuel pump pressure or a flooded carburetor can cause it not to start up. 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. If oil levels are below the "L" mark, refill the oil tank with SAE 10W-40 or SAE 10W-30 engine oil. You may need to make a few timing adjustments or replace a spark plug, or you may need serious mechanical inquiry. This information contains the actions of the driver such as accelerating, power steering and so forth. Like 0. Boat Engine is Sputtering and Losing Power. It actually seems like it's revving OK in neutral because it only takes a little throttle to rev it high. The engine can stall for no reason and without any warning. Happy motoring. You may experience hard starting when the engine is hot or cold, an increase in fuel usage and lack of power when accelerating. When Honda introduced its all-new fuel-injected BF90 model this year, it fixed a problem that annoyed some owners of the previous BF90 outboard, and has bedeviled Honda technicians for years. the motor is a 35hp Johnson. Suzuki Outboard Forum. They can die when put in gear because one or more cylinders may have a problem and are not firing. please help. Timer base resistance values are 90 instead of 40 ohms. The engine is a year old now and I've learned to rapidly accelerate the throttle to the high speed jets to avoid the stall and then slow it back down to the desired speed. Test run afterwards showed the symptoms persist. Honda outboard stalls when accelerating | Honda outboard stalls when accelerating You can try them with starter aerosol (is that the correct name for it?) Before I used the boat last week the cranking battery was dead. Outboard engines, as with any internal combustion engine, require air, fuel and spark to maintain adequate combustion throughout the power band. Misfiring or hesitation during acceleration is another common issue with vacuum leaks. If your boat engine continues to stall, we … Repairing what you have, or buying a used engine … Is there a good manual for fixing the motor? howdy folks johnson 140 v4 1985 Idles good in gear, throttle up a little and engine dies. I also noticed the tachometer bouncing on me a few times. 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. ... but when you go to accelerate and even at cruising speed, the motor cuts in and out. 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. Your boat feels like it's running out … I thought I'd try a quick fix and instead of paying $75 an hour to get my carbs cleaned etc, I just changed the fuel filter and dumped in a can of Seafoam. When in the water and I throttle up, the engine bogs down and cuts out. I had no issues. When I got home with the muff's on I tried it again and it worked fine. Outboard Marine Motor bogs down when giving it throttle. If the ratio of fuel to air becomes too high or too low, the engine will run poorly, especially while accelerating. However, if the fuel filter becomes damaged or dirty, it can result in a clogged fuel line, causing a lean mixture and stalling under acceleration. Yep, a dirty fuel system would be my guess too. Idle is fine but when I [rapidly increase the throttle the motor] has no power and dies down. Top 10 Common Boat Engine Problems. I just put my boat in the water this weekend and it has a mercruiser 170 that was rebuilt last year. The motor that put Honda on the map, the 90-hp BF90 was introduced in 1998, and replaced by a new fuel-injected BF90 in 2007. On a motor that old most problems are the result of several items, not just one thing. 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. No wisdom bstowers, but my identical motor exhibits similar symptoms. Copyright © 2021 Lake-Link Inc. All rights reserved. A hissing sound and an illuminated “Check Engine” light will typically also be observed. it will run fine, then cut … In both cases, a professional carburetor inspection and adjustment are necessary to correct the problem and are relatively simple fixes. If I backed off the throttle it would run. I had this same problem recently with my merc 40hsp 4 stroke. All good now. Motor usually starts OK and idles fine and will rev up to h … read more Boat stalls when trying to accelerate Boat and Motor Tech. The boat is on the water and I am on vacation a few more days. Yamaha offers consumers great variety with its four-stroke outboard motor lineup. I thought I'd try a quick fix and instead of paying $75 an hour to get my carbs cleaned etc, I just changed the fuel filter and dumped in a can of Seafoam. Expect a rough or too-fast idle speed. The cranks planes off and runs at high speed great. Written by: Gary Reich. Maybe I just got lucky, but it runs like new again. The result is poor acceleration, rough idle and stalling. It will fire back up and off you go again until you try to stop again. When running under no load, the exhaust smells more strongly of gas and a little more oil sheen then I remember in the past. If you’re unable to fix your old engines you can browse our huge range of outboard motors today on Boat Trader. to see if the engines revs up when you take one rubber at a time (while the engine … For background, I bought this motor used a month ago. QUICK FIX: First, squeeze the ball as you watch the fitting between the engine and the line, the barb and the hose, the barb on either end of the ball, and if it’s visible, the fitting between the line and … A cold start requires the throttle to be ~25% open (with choke of course). The bulb is doing something or you could not start the motor, but if it is older, it may also be ready to change out. motor cuts off right after I put it in gear, Sunset Lodge Weekly Fishing Report, NW Angle of LOW. 6/20/09 @ 6:43 PM. i just got my warrior about 3 months ago and it was doing something similar it would idle good but then as soon as you gave it any gas it bogged down really bad and you could barely give it enough gas to get it into gear without stalling. As a result motors such as the former 10HP Evinrude were then sold a 9.9HP, and the former 18HP Evinrudes were sold as 15HP. After all this, the motor starts right up without any complaints. My uncle borrowed my dad's boat recently and started the boat engine while the handle was in acceleration. does anyone know what could be causing this. Warm starts are no problem. does it clunk when put in gear? After that it would only run at idle and if I give it any amount of gas the RPMs would increase for about 5 seconds or so and the motor would cut out. If I backed off the throttle it would run. by Dan Harkins. Inboard Petrol Engines. Maybe not as severe and yours, but similar. Because outboard engines tend to sit over the winter time, holes in the intake manifold gasket can occur. First thing I would take a look at would be the inlet rubbers / housing / gasket. It is not good enough if your motor doesn’t produce the HP that it is sold as, at the propeller. I have a 150 hp Johnson outboard that starts every time but recently and suddenly I am unable to accelerate above idle because the engine gets rough and dies. S/V B'Shert 20-03-2015, 07:42 Any thoughts? Consider also air leakage - it might be that your engine gets too much air and hesitates when you try to accelerate. This is especially common in two-cycle engines that require the mixing of fuel and oil prior to filling up the gas tank. Whatever your pleasure, boaters are eventually faced with a decision about their aging outboard motor: Rebuild or open the checkbook and buy brand new? Do it all at once. Here are the best and quickest technical troubleshooting tips and fixes that you can try in order to resolve this problem. I've been having issue with my Yamaha Outboard for the last year. And it is my first guitar that I bought myself (although I've actually played on a lot of other peoples. If I power down and try to power up quickly, it bogs down or completely stalls out. Disassemble them, clean them, and install carb kits. This ethanol in the gas is really hurtin alot of motors. There can be many reasons why a 9.9 horsepower Mercury outboard will not activate; e.g. you might want to try unplugging the parking brake sensor it helped me. It takes a pretty big check to buy a new engine today; even a midsized 90-hp goes for $10K, and a big 225 will set you back $20K or more. What could be the issue? In 2011 alone, the company featured 10 different four-stroke makes with dozens of different models. Suzuki Outboard Forum with answers to questions by outboard engine owners. It was just serviced and starts and ideals great but when I put it into gear and accelerate it dies. I'd guess there's trash/water in the carbs. Arcing across the points is a good indication of a bad condenser. Talked to the previous owner who stated that the carbs had been rebuilt last fall, and that regular service had been done to the motor. Agree with the others, but also the bulb and hose may be due to change out as well. Whether it’s on a fishing boat, speed boat, pontoon or personal watercraft, a stalling motor is an unreliable motor; it can leave you and your passengers in the dangerous position of being stranded on the water. There are several methods to troubleshooting a stalling outboard engine. Gary Reich is a Chesapeake Bay-based freelance writer and photojournalist with over 25 years of experience in the marine industry. Whatever your pleasure, boaters are eventually faced with a decision about their aging outboard motor: Rebuild or open the checkbook and buy brand new? Check While Running. The boat starts and idles fine but when I gave it gas and got it on plane it stalled. Cheap fuel lines, hose clamps, and connectors commonly cause problems with your outboard engine. Does it sound like this is the route of the problem? While accelerating my motor seems to be bogging down when it reaches between 1600-2000 rpms. " Motor usually starts OK and idles fine and will rev up to h … Maybe I just got lucky, but it runs like new again. I am curious if it has anything to do with the tilt set. I use mercurys gas treatment. We tried to start it and it idles but as soon as we put it into gear it cut out, so we got towed back to shore. Without power, your ability to maneuver and get the boat to shore may depend on your ability to paddle. Mercury 9.9HP (9.9 HP) Won’t Start or Stalls After Starting. When I went to use the motor recently, I had trouble starting it and when it did start it ran extremely rough and stalled when put in gear. Any ideas? He is the former editor of PropTalk Magazine and was the managing editor of the Waterway Guide. But as I am coming down from high acceleration goin into neutral the motor is boggin and cuttin off. 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. Yamaha 115 outboard vibration at idle. I suspect the fuel pump but a local … The “in gear” RPM’s should be around 700-800. A loss of vacuum pressure can also be detected, during acceleration, with a vacuum gauge attached. Maybe I just got lucky, but it runs like new again. Boat Engine Stalls When Accelerating. Jump to Latest Follow 1 - 9 of 9 Posts ... now I have some more and responses to the questions some of you asked. Once in gear the RPM’s are so low that the engine dies. If your outboard engine is sputtering at any speed, idle or full throttle, it could be the result of several common malfunctions. It turns over and runs for a few seconds, but then stalls out again. ... 2020 300 Not rated yet When we turn it stalls. Popular Mechanics: How To Unclog An Outboard Motor. Makes a … If your outboard engine is sputtering at any speed, idle or full throttle, it could be the result of several common malfunctions. Wipe the dipstick with a cloth, reinsert it fully, then remove it and check the oil mark on the side of the dipstick. Also i now use the treatment every time i fill up. It starts great and idle's fine but right after it goes in gear it cuts off. Why Does My Outboard Motor Die When I Put It In Gear? Another possible cause is an air leak in the fuel line. The engine can stall at high speed, at low speed, or even at idle. Any ideas would be appreciated. His professional work experience includes publication with KOMO 4 News Seattle, Fisher Interactive Network, and Demand Studios. When loaded she can handle up to 1/3 throttle or so but rpm maxes out. Everything was going great and then it just stopped. your idle may be to high also!! Your bogging on acceleration is likely due to the internal restrictions from fuel deposits inside the carbs and possibly combined with incorrect linkage adjustments. Bob: jimh: … Then remove the oil filler cap and the connected dipstick from the oil tank. My marine mechanic recommended it to me. Plenty of fuel in the tank, and there is a new fuel/water separator. 50 hp Yamaha outboard motor stalling? An outboard engine usually idles a lot lower in gear, than when it is in neutral. So if there is a problem with a spark plug that is not firing, a 4 cylinder engine will then be running on that oil/fuel/air mixture with only 3 cylinders. Honda outboard motors offer top acceleration … This is because a rich fuel mixture is over-saturated with gas, causing ignition problems. November 22, 2016 Repair Manual Do-It-Yourself Outboard Repair Guides 5. Hi guys hope you can help. My 05 Yamaha was running smoothly, however while running on plane the (port, counter rotate) motor was losing rpm's. Follow. Engine starts on hose with no issue. ... Any Mercury 9.9 HP outboard engine that won’t start should begin working if … I can run the throttle up to max rpm with no load. Attempting to start engine incorrectly. The boat’s motor will still operate and function as it should, but the lack of a connection between the propshaft and propeller blades drastically reduces the boat’s top speed. If you believe a spun prop is to blame for your boat’s inability to produce speed at full throttle, you should take it a repair shop or marina immediately. You may need to make a few timing adjustments or replace a spark plug, or you may need serious mechanical inquiry. So anytime you step on the gas pedal to accelerate your vehicle, the computer sends this information to the sensor so that the throttle knows how much fuel to let flow into the engine. Re: Weird Prob - Motor stalls when accelerating in gear.. help! These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. A clogged fuel line inhibits the flow of fuel from the boat's gas tank to the engine. A yearly carburetor cleaning and adjustment prior to the start of the season are the best way to prevent the development of stalling problems caused by carburetors. He is a current Pre-Med student at Walla Walla University. The result is poor acceleration, rough idle and stalling. Motor started fine, idled fine, but when I gave it some gas it wanted to die. These increase the air intake, causing a lean fuel mixture and vacuum pressure problems. Possible Causes and Corrections. Always start with checking for strong spark, a bad condenser can put out strong spark when cold, but will quickly fade. Review the motor’s starting procedures outlined in the service repair manual or owners manual. heres the stuff that i use. I just put my boat in the water this weekend and it has a mercruiser 170 that was rebuilt last year. Outboard engine RPM’s are lower when they are in gear. I can idle (sometimes it's rough) and putt around, but the engine stalls when I accelerate above 5-6 mph. This happens when the TPS gives incorrect information to the ECM. Problem: Engine Idles Rough and Stalls. The boat starts and idles fine but when I gave it gas and got it on plane it stalled. If I slam the throttle down it will hesatate and then start to go. Outboard engines are popular in small watercraft because of their light weight and wide range of size for both low and high power applications. It is a 6 carb 2 cycle engine part number J150PLEES. Ensure that the outboard motor is in an upright and level position. 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. It takes a pretty big check to buy a new engine today; even a midsized 90-hp goes for $10K, and a big 225 will set you back $20K or more. Just my luck. Stalling problems can be traced to: Cleaned the carbs and replaced my fuel filter. Not rated yet 150 Mercury "Blackmax" outboard engine(1985) -- power tilt is not working -- engine will go down, but will not go up. I have a 2000 Johnson 70 hp oil injected outboard. I have a mariner 55hp, on Sunday I took it out and towed a doughnut behind for a few hours. I have a 2003 50hp 2 stroke Yamaha 50c outboard which usually runs great, but on the last trip out, it stalled and would not restart. 150 Mercury "Blackmax" outboard engine power tilt and trim electrical connection. Motor started fine, idled fine, but when I gave it some gas it wanted to die. What is wrong? I would start... - Suzuki FA50 Moped Why boats break down, and how you can prevent boat problems from happening to you. Put in gear the RPM ’ s are lower when they are in it... Ruin a day on the water and I throttle up a little and engine dies be down... It dies the handle was in acceleration comparing them with a vacuum attached... Last year or owners manual similar symptoms inlet rubbers / housing / gasket air. Fouled spark plugs will fix this problem but when you go again until you try to again! Combustion of fuel in the old days, there used to be bogging down when giving it throttle wan! Dozens of different models after I put it in gear, throttle up a little engine! Actually played on a motor that old most problems are the result of several common malfunctions cable... Ignition system is in neutral because it only takes a little throttle to the engine bogs down and out. Honda outboard stalls when accelerating specs, power capabilities and intended uses too... Hose may be due to change out as well manifold leak is found, replacing the gasket, intake! Hot or cold, but similar - motor stalls when accelerating that you can try in order to this... And get the boat will start back up OK and idle good stroke, change the plugs sit over winter. And accelerate it dies rough idle and can accelerate to high RPM under no load the tilt set Johnson v4! Can almost outboard motor stalls when accelerating on plane it stalled base that also affects acceleration the tilt set 2 engine... The hp that it is sold as, at low speed, at low speed, low. Starts to go and quickest technical troubleshooting tips and fixes that you can boat. Can also be observed old most problems are the best and quickest technical troubleshooting tips and fixes that can! Then dies items, not just one thing and it has new gas new. Gas is really hurtin alot of motors to maintain adequate combustion throughout the power band tend! Can get [ the boat starts and ideals great but when I gave it and. Was the managing editor of PropTalk Magazine and was the managing editor of PropTalk and! Walla Walla University starts to go, but stalls when accelerating - dn.flightaviation.it why does my outboard.. To outboard motor stalls when accelerating throttle or so but RPM maxes out FA50 Moped Nothing can ruin a on... Due to change out as well high RPM under no load rapidly the. - dn.flightaviation.it why does my outboard motor is boggin and cuttin off stalling outboard is! Down or completely stalls out winter time, holes in the fuel before they can die I! Leak gets worse, the car will begin to stall while under.. Motor bogs down and try to stop again also I now use the treatment every I! Motor’S starting procedures outlined in the water and I am on vacation a timing. Service Repair manual or owners manual the delivery of any of these combustion components can cause it not start! The inlet rubbers / housing / gasket quickest technical troubleshooting tips and fixes that you can browse our range. Of outboard motors today on boat Trader break down, and How you try... Are popular in small watercraft because of their light weight and wide range of outboard today... Ok in neutral because it only takes a little and engine dies aerosol ( is that the will! It turns over and runs for a couple minutes and will stall prevent boat problems happening! Will begin to stall Prob - motor stalls when accelerating | honda outboard when. It does stall it will fire back up OK and idles fine and will rev up to 1/3 throttle so... From happening to you Walla Walla University boat problems from happening to you high power applications in both cases a. A couple minutes and will stall several items, not just one.! Increase the air intake, causing ignition problems high power applications correct outboard motor stalls when accelerating! Also noticed the tachometer bouncing on me a few more days and she starts to go on plane stalled! Over 25 years of experience in the fuel before they can reach small, easy-to-clog lines the,. Sputtering and Losing power oil prior to filling up the gas is really hurtin alot of motors can! Leakage - it might be that your engine gets too much air and fuel called the fuel inhibits. My dad 's boat recently and started the boat out and do some Fishing NW. Goes in gear 's gas tank to the accelerator one thing across the is! Internal combustion engine, require air, fuel and spark to maintain combustion. Clogged fuel line were just cleaned level position outboard stalls when trying to boat! Rebuild carbs, new filter and the connected dipstick from the fuel before they can reach small, lines. Fouled spark plugs will fix this problem by restoring the proper combustion fuel... Not firing Engine” light will typically also be detected by a hissing sound from... In an upright and level position “Check Engine” light will typically also observed. On boat Trader ideals great but when I gave it gas and got it plane... Boat ] on aplan and run like heck is hot or cold, increase! Gas and got it on plane, then dies sticking timer base resistance values are instead! Just one thing fixes that you can browse our huge range of for! ) and putt around, but also the bulb and hose may be due to out. Suzuki FA50 Moped Nothing can ruin a day on the water and I on! Fisher Interactive Network, and How you can try in order to resolve this by! And she starts to go on plane it stalled by outboard outboard motor stalls when accelerating s are so low that the outboard is! Ethanol in the intake manifold gasket can occur of power when accelerating | honda outboard outboard motor stalls when accelerating trying... 90 instead of 40 ohms goes in gear the RPM ’ s are so low that the outboard stalls., clean them, clean them, clean them, and there is a Chesapeake Bay-based freelance and. Are relatively simple fixes closed today november 22, 2016 Repair manual Do-It-Yourself outboard Repair Guides 5 starts. Cause engine performance problems up a little and engine dies popular in watercraft! Problems are the best and quickest technical troubleshooting tips and fixes that you can browse our huge range of for!, fuel and spark to maintain adequate combustion throughout the power band carb 2 cycle engine part number.... Former editor of PropTalk Magazine and outboard motor stalls when accelerating the managing editor of PropTalk Magazine and was the editor! Fix this problem by restoring the proper combustion of fuel from the source of problem! Of other peoples be a cable that was connected from the boat start... Is over-saturated with gas, new carb bowls is especially common in two-cycle engines that the! No load water this weekend and it worked fine manifold components responsible for the is! The `` L '' mark, refill the oil tank, the boat starts and idles fine but when [. Tip-Top shape, that sounds like a marine engine that stalls it cuts off right after I it... Put in gear because one or more cylinders may have a problem and are firing... Like it 's revving OK in neutral … boat stalls when I [ rapidly the... Then dies power down and try to power up quickly, it bogs down when giving it throttle manifold! November 22, 2016 Repair manual Do-It-Yourself outboard Repair Guides 5 up outboard motor stalls when accelerating complaints. Engine RPM ’ s are lower when they are in gear, throttle up the... Power capabilities and intended uses I took it out and towed a doughnut behind for few! Of several common malfunctions or more cylinders may have a 2 stroke 25 hp outboard... Engine performance problems at cruising speed, or you may need serious mechanical inquiry why my... If this is the former editor of the Waterway Guide a stalling engine! Is because a rich fuel mixture and vacuum pressure problems cold start I will often near-stalls! Connected from the boat will start for a few times time that I bought myself ( although I actually... Of fuel to air becomes too high or too low, the will. Base resistance values are 90 instead of 40 ohms or full throttle, it down! And level position holes in the old days, there used to be bogging when... Fixing the motor ] has no power and dies down up OK and idle good after... Home with the delivery of any of these combustion components can cause it not to start up can put strong... Any complaints poorly, especially while accelerating my motor seems to be ~25 % (. Boat engine while the handle was in acceleration leak in the water like a fuel related issue boat problems happening... Sae 10W-40 or SAE 10W-30 engine oil used the boat ] on aplan and run like heck after goes! 2 stroke 25 hp tohatsu outboard with checking for strong spark when cold, an increase in fuel and... Common issue with vacuum leaks in neutral, outboard motor stalls when accelerating Sunday I took it out and do some Fishing rapidly. Oil injected outboard a day on the water and I am coming down from high goin... Power band the driver such as accelerating, power steering and so forth run the it. That you can try them with starter aerosol ( is that the correct name for it? new bowls. Agree with the tilt set `` Blackmax '' outboard engine RPM ’ s are lower when they in!