Brand new outboard with 22 hours. Runs perfect at idle and 5800 RPMs and every RPM in between. After running engine for any length of time; shut down and tilt up and then return to running position within a few minutes (or sometimes not tilt up but leave off for 30 minutes) and attempt to start and engine cranks for 10 to 15 seconds without ...Messages. 6. Jun 9, 2003. #7. Re: Yamaha Four-stroke 225 runs rough at idle. The engines are both running off the same fuel tank. They also changed all the fuel lines on both engines from the tank to each engine. They also tried running the bad motor off a portable tank, although not for a sustained period of time.Yamaha & Suzuki Outboards . 2001 Yamaha 50hp tlrz 2 stroke with prime start system starts and dies ... idles and runs fine with the choke in the open position. Isn't that what it is supposed to do? If it then dies, maybe the carb float level it too high...IDK . T. tdave Cadet. Joined Mar 21, 2018 Messages 25. Mar 16, 2021 #5 The engine is …I know of a late 90's ocean pro 90 hp 2 stroke that the guy says runs, but has a knock. ... or repair or to run unitl it dies....seemingly good price and it comes with guages, the binnicle controls, and cables. ... If you run it until is quits then who knows. B. bob johnson Rear Admiral. Joined Feb 25, 2009 Messages 4,304. Mar 25, 200962,321. Aug 8, 2010. #8. Re: Motor dies when shifting into Neutral. Put in a new Mercruiser OEM new style cable, and your problems will be over. If the cable doesn't move VERY EASILY when unhooked, then it will be even worse when hooked up. You are fighting a faulty cable, that's all there is to it.Make sure that your carbs are clean. I have had to rebuild carbs a couple of times and mess with float levels at times before they run perfect. Tuning is only effective if all the jets and seals are working properly. persistance is sometimes the most frustrating part of tuning 2 stroke engines.Jul 3, 2012. #7. I had a similar problem on my 1986 25hp. I wasn't going to play guessing games so I replaced the fuel pump, easy fix, gas filter, easy fix, I replaced the primer bulb because mine was old and beginning to dry out and I replaced the gas cap on the tank because it was pretty rusted and I think may have been causing a vacuum in ...Here are 10 reasons and fixes to help prevent lack of fuel to a 2-stroke engine. 1. Mixture Screws. The first thing to check before anything else is the mixture screws. The fuel air mixture screws on the side of the carburettor are marked H for High for the engines high speed adjustments and the L means Low for the engines low speed adjustments.My 2012 Mercury 90 HP EFI outboard runs well but after sitting for an hour it restarts, idles rough, has no power and eventually dies. ... Runs wide open for about 300 yards then shuts down to about half throttle, ... I have an 88 115 hp 2 stroke outboard,great shape and ran well until it suddenly started dieing out at full throttle it did this ...It just sort of bogged down and died. I start it back up and it dies within 5-10 seconds each of the 10,000 times I get it started. I tried starting it and revving it up and it …Problem #3: Poor Performance. If your Mercury 90HP 4-stroke outboard motor is not performing as well as it should be, there may be several reasons for this. Poor performance can be caused by issues such as a dirty propeller, a blocked fuel line, or a clogged air filter. You may notice a reduction in power or speed, or the motor may feel …Messages. 2. Mar 27, 2012. #1. Hello.. I have a 2006 Mercury 9.9 hp 4 stroke that starts great and runs for 5-10 seconds then shuts off like it runs out of gas. It starts right back up and runs for 3 sec then off. Then if I try to start again it doesn't. If I let it sit for a day it will start and run for 5-10 seconds then shuts off, etc, etc.Tweet. #2. 08-07-2012, 09:08 AM. Should have 5 volts plus or minus .25 volts between orange and red wire of TPS with key on, Synchronize throttle plates and before resetting idle screw set TPS at .5-.52 volts between pink and orange wire with throttle plates completely shut, should be able to see voltage slowly increase as throttle is opened up.Tweet. #1. Intermittent engine stall-fuel flow issue. 04-03-2015, 09:03 AM. I have a Suzuki 4 stroke that is 10 years old. It has been serviced and runs fine. However, it will stall periodically. The sequence goes as follows: squeeze primer bulb prior to starting, will start and run fine. Stop for awhile and then it will start up but stall ...Yamaha 40 hp 2 stroke - starts, idled shortly, then dies. I recently purchased a 15 foot whaler with a 40 hp 2 stroke Yamaha outboard. The previous owner had it regularly serviced and hadn't shown an issues until today. I was out with a buddy today and it was running fine.2. Put in forward gear 3. Runs fine for a few seconds (even seems to accelerate normally if I open up the throttle) 4. Red light suddenly turns on at the same time that it starts running super rough 5. Runs rough for about 5 minutes, not letting me go very fast, but still pushing the boat a bit 6. Turns off 7. Rinse and repeat...8,958. Apr 28, 2014. #9. Re: Engine only runs with choke on. No it doesn't. When you pull out on the choke knob the choke plate on the carb should close, sealing off the air from the carb. When you push the choke knob in, the choke plate in the carb should be wide open, allowing air into the carb.Once the motor is warmed and it dies and fails to restart....Check for spark. ignition components often start to show signs when warm/hot. if both cylinders have spark...you say it has good compression...so all you need is fuel at that point. if you have all 3, then check to make sure the spark is at the right time (IE check engine timing).Oct 8, 2009 · Salty John said: Honda BF8, 4 stroke outboard. Ran fine but then, after not being run for three months, runs rough. It starts, idles somewhat roughly, dies after a few minutes. Under load it will run for a couple of minutes, then dies. Restarts easily - one pull - but then runs a couple of minutes and dies. I suspect a gunged up carburettor.Jun 24, 2021 · Faulty Impeller. Bad Spark Plugs. Malfunctioning Fuel Pump. 1. Tangled Propeller. If your outboard motor will not throttle up, the issue may be as simple as a tangle. Debris such as fishing line, excessive seaweed, beer can rings, or nearly any other material can wrap around the propeller and its spindle.How to Compression Test on Mercury 2-Stroke Outboard Engine. Next. DOWNLOAD Mercury Outboard Repair Manual (1964-2005 Models) Related Articles. Do-It-Yourself Outboard Repair Guides 1965-1989 Mercury Outboard Idle Mixture Adjustment November 3, 2016 Repair Manual 0. These idle mixture adjustment tuning procedures …Problem 1: Overheating. Overheating is a common problem that occurs with the Mercury 50 hp 4 stroke engine. This can be caused by a variety of factors, such as a faulty thermostat, a blocked water intake, or a damaged water pump impeller. When the engine overheats, it can cause serious damage to the internal components of the engine."Have a 1980 model Johnson 70h "Have a 1980 model Johnson 70hp. It starts right up and runs for a minute or two then just dies. Will restart back up after letting it set again but does the same thing. NOt fuel related dies, just shuts off like you turn the key off. Never had any problems...9.9.yahama outboard engine surges while running.idle reves up really high on starting or shifting from gear to neutral then drops to low idle and stumbles o...Boat owners who have been using a 2 stroke outboard engine might sometimes experience a power loss when running their boats at full throttle. This can happen with any engine irrespective of its age, maintenance, and usage. In such situations, it becomes crucial to diagnose the problem and fix it to ensure smooth and efficient … 2 …When it dies out, if I manually squeeze the primer bulb it will often fire back up. ... Does the level of the 2 stroke oil affect the operation, in example I know the generator on my motor home will shut down when the oil is too low. ... 1995 90 HP Mercury Outboard - runs for a while then shuts down New developments in regard to this. After …2. Jun 26, 2008. #2. Re: Mercury 2 Stroke 50hp Won't Idle. For everyone who might have this problem, I thought I would share the solution to the problem. The carbs were loaded with water and the fuel filter was half full of water. We are going to replace the gaskets, clean out the carbs, drain the fuel filter and replace it, and also put in an ...90hp 2-stroke Yamaha, loss of power after 15 sec. on 3/4 throttle. Starts and idles fine, put throttle 3/4, then to full, it takes off normal, good jump..., then 10 to 15 seconds later, it slows down and runs rough, takes about 15 seconds to recover, then idles great again, put into gear again, same 3/4 throttle and then to full throttle, after ...This fouling may result in a weak spark or no spark at all, making it difficult to start the engine. Another factor that may hinder the successful starting of a 2-stroke motor is the lack of a dedicated lubrication system. Since these engines rely on the fuel and oil mix to lubricate their internal parts, it is essential that the right ratio of ...999. Nov 26, 2017. #3. Your problem has been going on for two years. If you would bet your life the fuel system is perfect,then. It's a wire, just a guess, anything this weird and long is usually a wire corroding almost all the way through in a wire connector. Pull all wires that go into a wire connector very hard.And,Jul 3, 2012. #7. I had a similar problem on my 1986 25hp. I wasn't going to play guessing games so I replaced the fuel pump, easy fix, gas filter, easy fix, I replaced the primer bulb because mine was old and beginning to dry out and I replaced the gas cap on the tank because it was pretty rusted and I think may have been causing a vacuum in ...Sep 20, 2014. #1. My 1993 Johnson 25hp starts up, runs for a few seconds then turns off, then it's hard to start without using the key switch electrical primer. Before it turns off, if I push the key switch primer in, it keeps running, as long as I keep doing it. After it turns off, I let it sit for 10 minutes, and she starts right up without ...Will run in neutral for 2-3 minutes--sputtering, misfiring occasionally--then dies. If I try to throttle - Answered by a verified Marine Mechanic ... I own a 2006 Yamaha 2 cycle, 50 hp outboard that runs out of gas at full speed. ... Mercury Tech. 5,752 satisfied customers. My 2003 25 hp yamaha 2 stroke outboard lost fuel pressure, My 2003 25 ...The motor starts in about 1/2 a turn, it runs perfectly at idle. It will shift into gear but bogs down when it is under a load. It will not get past 2000 rpm's. Here are the things ive done so far. 1. cleaned carbs with cleaner and air pressure. 2x's. made sure needle was falling when float comes down 2. Drained all old gas out, put in new gas ...3. Aug 13, 2006. #1. I have a 1998 70 hp Suzuki motor on a 19 ft pontoon boat. I have had the boat 2 years now. Last year it ran great. This year I am having a lot of issues with the motor. It dies within 5 seconds of starting. It takes a while but I usually can get it started (10 - 15 tries).28,765. Jun 19, 2013. #2. Re: Mercury Loss of Fuel Prime. Understand that the purpose of squeezing the primer bulb is to force fuel to the engine. Once the engine starts, fuel is sucked through the line so the bulb will get soft. That is not indicative of a problem unless the ball is sucked flat. That indicates there is an obstruction between ...When a Suzuki outboard motor stops running because of an overload on the engine, or begins to operate irregular, then follow these simple troubleshooting steps to pinpoint the cause of the problem. For reference, these repair instructions pertain to certain electronic fuel injection Suzuki outboard motors experiencing the following scenario ...In this article, I will discuss the common problems and the solutions for Honda’s 4-stroke outboards. A Quick Overview to Boat Gas Tank Vent Issues and The Reasons Behind Them: Problems. Reasons. Engine Dies Out. Jammed Carbeurator.Clogged Fuel Filter.Gunk in Idle Jets.Petrol Tank Vent Blockage. …If the alternator is malfunctioning, then replace it. NB: Electrical issues are very common. You may find the issues on the Blue Wave boat and or Mercury 115 2 …New member. Dec 2, 2014. #1. My 2007 Tohatsu four-stroke, bought on e bay this summer, will run for only about 10 minutes before cutting out. It needs to be left for a few minutes before it will start, then dies again after a few minutes. The mechanic working on it is stumped, as he has replaced the coil and carburettor, cleaned out the fuel ...Mar 2, 2008. Messages. 15,640. Jul 23, 2013. #20. Re: Motor won't start when in water but starts fine with muffs. Remove all the spark plugs and retest with a hot battery, if still 45 psi quit throwing $$ at it. Motor should have a minimum of 100psi to run correctly. 1.I have a 1994 or 95 150 hp Evinrude outboard that shuts off after about 10-15 minutes. It fires just fine when cold but after running a little bit it just completely shuts off, no sputtering or anything just dead. It will not restart for …Jul 2, 2010. #1. My 2003 9.9 4 stroke idles fine both in gear and in neutral. As soon as I try to advance the throttle a bit it dies. If I pull the choke on, then advance the throttle, it will increase in RPM but then start running rough until I throw the choke off, then it will die unless I throttle back immediately after taking the choke off.2002 Suzuki DF140 4-stroke. Had in storage yard for the last 7 months (ever since Ivan!). Anyway...<br /><br />Starts great, runs at low RPM's great but at full throttle will run fine then after a brief period (few minutes or so) will loss a 1000 RPM's, after another brief period returns to normal, and then again, back down, then back to normal.<br /><br />Any throughts out there on what the ...Battery switch is off. If your boat has a battery switch, make sure it's set to the ON position. Kill switch disconnected. A rookie mistake just about every boater has made. Make sure the safety lanyard/kill switch is in place. Incorrect starting sequence. Follow your outboard's startup sequence. For example, if your outboard needs choke ...Jun 26, 2018 · 06-26-2018, 04:52 PM. I have a question for you guys about a boat I recently purchased, a 2002 Boston Whaler, with a 2003 Yamaha 90hp 2 stroke Outboard. The engine ran great the first few times I had it out, but always seemed sluggish, I was getting 4600 rpm and 36 mph at WOT, but it would take a while to get up there, it didn't seem to be very ...Mar 23, 2014. #1. Ok i have a 1990 oil injected 90 yamaha cleaned all 3 carbs pilot and main pulled the pilot screws cleaned all that set them at 2 turns out checked the fuel pump all is good no leaks so runs good out of water idle too wot put it in water as soon as u put it in gear it just boggs cant even get it on plane any ideas 15 pitch ...Advertisement You can now see that two-stroke engines have two important advantages over four-stroke engines: They are simpler and lighter, and they produce about twice as much pow...Mercury 2.5 hp 4 stroke outboard quits operating after 15-20 minutes. If I let it cool down for 15 minutes it'll - Answered by a verified Marine Mechanic ... When engine dies you need to be prepared to test quickly. ... I have a 2.5 hp 4-stroke that runs under load for 5-10 minutes and then shuts down and won't start until it cools. It takes ...seumask said: Another Outboard question. I have a fairly ancient Yamaha 8 that starts fine and idles normally to start with. However as soon as it's used for a couple of minutes it wont run at low revs, cutting out and will only then start with the throttle fully open if at all. I have checked the fuel supply and made sure there is no water in ...Started and choked it several times, it will run for a short time and then dies like it is starving for fuel. ... Outboards won't run with it easily, and newer 4 cycles are the worst. 15-10-2015, 10:01 #13: skipmac . Senior Cruiser . Join Date: Oct 2007. Location: 29° 49.16’ N 82° 25.82’ W. Boat: Pearson 422. Posts: 16,306 Re: 15 hp Mercury 2 stroke …05-14-2010, 10:05 AM. I have a 2000 yamaha 60 hp 2 stroke that is on and off again cutting out problem at various speeds.I've eliminated fuel and have replaced one coil and have moved that new coil to each cylinder with no difference. Sometimes it will run great then it cut out like it's running on just 2 cylinders,more so when I back off when ...Spray a little bit of starter fluid or carburetor cleaner directly into the air intake on the carburetor. 3. Pull on the starter rope. Now pull the starter rope and see if your engine starts up. Diagnosis: If the engine fires up and immediately dies, then you probably have a problem with your carburetor.Yep, the high speed jet gets the high RPM's, the low speed jets, low speeds.. Make sure ALL the openings are clear (you can see thru them. If the fuel is older than a month and un-stabilized, it's likely bad. Dump it and get fresh fuel B4 trying to crank it up again. Un-less you enjoy "do-overs".27. Aug 28, 2005. #1. Basically my 1996/1997 60hp is cutting out and refusing to restart after being run for a while. I was out and cruising along at about 25knots and I slowed down to stop and put it in neutral and it died and then refused to restart. Had to get towed in. Took it home and cleaned all the fuel system right thruogh and the carb ...To repair this, replace your fuel filter. 4. Too Much Oil Can Cause the Engine to Shut Down. When there is too much engine oil in your snowblower then your engine may smoke, run terribly, and eventually may shut down. Too much engine oil can get up to your spark plug, into your cylinder, and hydro lock your engine.Modern outboard engines have come a long way, whether you’re talking about the now-common four-stroke or modern DFI motors on up to Mercury's biggest 600-HP power plant. . In any of those cases, reliability is far better than it was in decades past, fuel efficiency has increased, and problems like smoky exhaust and ear-splitting sound levels are ancient histoJul 20, 2020 · 927K views 3 years ago. This is really an easy fix you can do yourself without having to pay a mechanic. 🔷️ HERE IS PART 2 of this Mercury outboard fix. Finding the high pressure fuel filter ...Sep 6, 2006 · 8,646. Sep 5, 2006. #2. Re: 1993 25 hp mercury runs but then stalls and won't start. My guess is it's flooding. But instead of the shotgun approach, why not troubleshoot logically, one step at a time: First, compression test. Report the results. Next, determine for yourself whether a cylinder is dropping:Here are the steps to fix a two-stroke engine not starting when hot: Check the fuel. Clean or replace the air filter. Check the spark plug. Ensure the compression is 110-130 psi (758.4-896.3 kPa). Ensure the oil to fuel ratio Is 50:1. Clean and adjust the carburetor. Replace worn crankshaft bearings and seals.Re: 40 HP Mercury stalls when given throttle #2. If he ran it out of gas it's possible he sucked some deris from the bottonm of the tank into the system a good carb cleaning might be in order. As for the fuel pump I had a similar problem with a 70 horse and a fuel pump rebuild ($11 kit about 15 mins to install) made the thing run like new again.Here are 10 reasons and fixes to help prevent lack of fuel to a 2-stroke engine. 1. Mixture Screws. The first thing to check before anything else is the mixture screws. The fuel air mixture screws on the side of the carburettor are marked H for High for the engines high speed adjustments and the L means Low for the engines low speed adjustments.7 posts · Joined 2009. #1 · Jan 4, 2010. Help... my 70 hp johnson outboard starts every time but immediately dies within 2 seconds. It can do this all day long. You prime it, raise the throttle assist, choke it, crank it, it fires up instantly, then immediately and mysteriously dies. Good fresh gas and the carbs recently cleaned.27,259. Sep 22, 2016. #9. If the boat runs fine at high speed for a time and then bogs down while still running at high speed, it is likely a heat related ignition issue. If she runs fine at high speed until you shut her down, and then she bogs upon restart, it could be fuel or ignition issues.Messages. 4,087. Mar 27, 2012. #2. Re: Mercury (Classic) 40 hp loses power on full throttle. Typically when a motor starts, idles, and runs well at full throttle for a bit, and then performance dies down it is a failing ignition component. And LOL at "classic". There are some guys on here with motors from the 30's and 40's!!To repair this, replace your fuel filter. 4. Too Much Oil Can Cause the Engine to Shut Down. When there is too much engine oil in your snowblower then your engine may smoke, run terribly, and eventually may shut down. Too much engine oil can get up to your spark plug, into your cylinder, and hydro lock your engine.In under two minutes, you could learn how to solve the problem for good! This helpful YouTube video by Succstrat explains what might be affecting your ability to get going. The way you have your primer bulb mounted could be your issue—and even if it isn’t–this guy’s accent and deadpan delivery are worth watching! Boat Fuel Problem.YAMAHA 15 HP 2 stroke outboard will not stay running unless the ckoke is pulled out. This can be a common problem in many outboard motors. So let's go insi...The Stroke Council is uniquely dedicated to advancing the science of stroke prevention, treatment and recovery through research and education. The American Heart Association's miss...It's a Suzuki 4-stroke 2.5 HP (yes, everything is really tiny) from 2008 that came with the boat and sat on the rail idly for 2-3 years, so of course the petrol had gone off. The ignition also had problems, which are sorted now after replacing the all-in-one ignition module. Spark plug is also new. So now it starts, but only runs for a couple ...Jul 3, 2012. #7. I had a similar problem on my 1986 25hp. I wasn't going to play guessing games so I replaced the fuel pump, easy fix, gas filter, easy fix, I replaced the primer bulb because mine was old and beginning to dry out and I replaced the gas cap on the tank because it was pretty rusted and I think may have been causing a vacuum in ...It will shift into gear but bogs down when it is under a load. It will not get past 2000 rpm's. Here are the things ive done so far. 1. cleaned carbs with cleaner and air pressure. 2x's. made sure needle was falling when float comes down 2. Drained all old gas out, put in new gas, new oil mixture 50:1. 3. new gas lines and pump ball, what else ...i have a 1988 Yamaha 40 2 stroke 3 cylinder Autolube. last year it ran good , but. not 100% ! Started it up 1 week ago and it takes 3 tries almost every time to start. once started it idles VERY rough . a low idle and then suddenly a higher idle and then a low idle , then "click" , "pop" and it dies . all of this happens in about 10-13 seconds ...Outboard starts and runs for a bit then dies. Thread starter Mwilson18; Start date May 1, 2021; M. Mwilson18 Seaman. Joined Nov 24, 2020 Messages 57. May 1, 2021 #1 I have a Mercury 60hp 2 stroke outboard, and a few months back I used an open tank of gas and an open ended (cut) hose that I plugged into my outboard and dumped the other end into ...Jul 2, 2003 · Apr 28, 2002. Messages. 7,518. Jul 2, 2003. #2. Re: Mercury 115hp idles fine, dies when put into gear. When you put it in gear try squeezing the bulb. If it keeps running that would point to a fuel delivery poroblem. If so I would start by rebuilding the carbs.01-29-2015, 11:56 AM. I have been battling a stalling out problem on my Yamaha 4 stroke 225 HP engine for years now. I'm at the end of my rope. After running the engine for awhile, it sometimes decides it wants to stall out at low idle. If I squeeze the primer bulb, it will usually restart right way and will run until it decides it wants to ...If its always done this your jetting is too lean, choke adds more fuel to the mixture. Check for main bearing play, there might be a air leak coming from the left side crank seal (Happened to my ds80) Check for air leaks around the engine causing lean running condition. I just out a new carb on it. That's when it started doing it.Mercury & Mariner Outboards . Starter issue mercury 40 hp 2 stroke ... . Starter issue mercur, 2007 75hp efi runs great then powers down and dies., In our previous blog, we discussed the diagnosis of Moy, Mar 5, 2012 · 11. Jul 16, 2012. #6. Re: Motor Shuts Off While Running. Well it, Big Jon Honda 5hp Outboard Shop Outboards. ... Please help, Some of the reasons why Johnson outboard motors lose power at full throttle includes overloading, overheatin, In this article, I will discuss the common problems and the solutions for Honda&, - Born Again Boating. Why Does My Outboard Die When I Put It In Ge, Jul 25, 2021 · Posts: 18. Re: 2 stroke outboard starts but then die, Jun 19, 2016. #1. So, you start the motor and in a min, The boat runs fine at higher rpm but when it is in idle, the mo, Hi, I have a 40 hp 2 stroke Suzuki, the last time it was on t, 5. Apr 16, 2001. #1. We have a 98 25hp Evinrude that , Hi all, I had something kind of strange happen to me today., 2 stroke outboard starts but then dies when throttled o, Mercury Marine has been manufacturing outboard engine, Mar 23, 2014. #1. Ok i have a 1990 oil injected 90 yamaha cle, Mercury 2.5 hp 4 stroke outboard quits operating after 15-20 minutes.