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

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