OX66 frustrating issue. 06-11-2016, 05:04 PM. Hello all, I've been having a very frustrating time with my Yamaha 2002 OX66 250 HP 2 stroke. All last summer it was running just fine except that towards the end of summer I notice that if I was running open throttle it would start slowly dropping RPM's on its own.#1. Hello, I've replaced the gaskets on the carb, cleaned it, rebuilt the primer/fuel pump, replaced the tank gas line, bulb and connectors. Starts easy, runs fine …2,644. Apr 30, 2005. #4. Re: 75 HP Merc. Runs rough @ idle and stalls (need Help Please) It could well be that some varnishing has occured during the time that the motor was laid up, get the carbs cleaned and adjust the idle mixture and see what happens.<br />It would be prudent to replace the fuel pump Diaphrams and the impeller as well.<br ...Dec 20, 2009. #3. Re: Yamaha 25 HP 2-stroke hard starting. The starting procedure in the owners manual is: * put throttle to start. * pull out choke fully. * Pull starter cord repeatedly till it starts. * If no start in 4 or 5 tries, increase throttle. * turn off choke when it starts.Nov 21, 2006. #6. Re: Yamaha 30HP 2 Stroke Running Problems. Alarms go off because of overtemperature or an oil related problem. A thermostat stuck shut will cause overheating. A thermostat stuck open causes poor running as the engine never gets to operating temperature. An oil related problem can kill the engine.ADMIN MOD. Outboard only starts with starting fluid then dies. I have a 2007 Tohatsu 6HP 4 stroke that I recently bought used. I'm fairly sure this is a carburetor issue, because we've tested the fuel lines and fuel pump, and the outboard doesn't start unless starting fluid is used, and even then it only runs a couple seconds, which I ...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.Yamaha VZ150TLRY starts and instantly dies. Last night I changes the VST filter and paper filter in the clear fuel filter on my 2000 Vmax 150 HPDI. I changed it after this past Sunday was on the water and at high rpm's the motor started surging and doing the fuel starving thing. So I ordered the filters and last night went ahead and put them on ...May 25, 2013 · Re: 1986 Evinrude 2 Stroke V6 150 hp starts (with manual help) then dies. Please help I pulled the carbs and cleaned everything with carb cleaner even sprayed inside the lines, pins, jets, everything. It started and ran for about 45 seconds and sounded good but died after. I checked the position of the floats and how far they opened looked good.Because the concentration of oil in a 2-stroke is so low - 1:40 or even 1:50, depending on the engine, it's easy to think that it isn't necessary. Not so; it's vital. Running a 2-stroke without lubrication is not good. If your engine will still turn over, it isn't seized, and you may have dodged a bullet. Put the correct oil/fuel mix in and see ...2003 225hp Yamaha 4 stroke - Dies while running - Appears fuel related. Need some Help . Jump to Latest Follow ... Both times the boat had been stopped for about 1/2 hour anchored or drift fishing and then started fine, started to come on plane and lost power and died. Pumped bulb, started and ran fine.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.2,644. Apr 30, 2005. #4. Re: 75 HP Merc. Runs rough @ idle and stalls (need Help Please) It could well be that some varnishing has occured during the time that the motor was laid up, get the carbs cleaned and adjust the idle mixture and see what happens.<br />It would be prudent to replace the fuel pump Diaphrams and the impeller as well.<br ...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 …issue: outboard motor (75hp mercury tracker -- 3 cylinder, 2 cycle) cranks, run well for several minutes at full throttle, then dies (or sometimes idles if I pull back the throttle when I hear the engine losing power). I prime the bulb, the motor cranks on 1st turn, runs well for several mins at full throttle, then dies/loses power. [repeat!]5 Reasons Your Toro Snowblower Starts and Then Dies. 1. Bad Fuel. 4-cycle (4-stage) Toro snowblowers require unleaded gasoline with an ethanol content of 10% or less. 2-cycle (2-stage) Toro snowblowers require unleaded gasoline with an ethanol content of 10% or less mixed with 2-cycle engine oil.Check your carburetor for any grime or dirt and clean it thoroughly. When it's perfectly clean, adjust the carburetor's settings to provide your engine with the proper fuel-air mixture, then try again riding at full throttle. 5. Debris in the Gas. If you have a relatively old fuel tank, look for any debris at the bottom.Hey all, So after fixing up this outboard by myself and youtube help, i finally got it running after 2 years. Have been on the water for around 7 weekends now and finally after trusting the motor decided it was time to go out further to the islands and just getting off the boat ramp (extremely slow moving) it died, sat there on anchor for around an 1 hr got it to start on many occasions and ...Mar 9, 2012. #2. Re: 1999 Mercury 2-stroke appears to be flooding. mikemnd10 said: Have been frustrated with my 3 cylinder Mercury 2-stroke outboard. If I disconnect the fuel line from the engine, the engine will eventually start and run until the float bowls are empty. According to one of the local marine repair technicians, he said it sounds ...Initial setting is: Slow speed = seat gently, then open 1-1/2 turns. Start engine and set the rpms to where it just stays running. In segments of 1/8 turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to respond. As you turn the valve in, the rpms will increase.2. Bad or Old Fuel. Old fuel is often the underlying problem when your lawn mower starts then dies. Bad Fuel in your mower can cause the mower to die after running. Gasoline usually only lasts 30 days before it starts to break down and fail. It loses its ability to run well and hot because chemicals added to fuel today start to decay or fall apart.Re: Mariner 6hp 2 stroke problem. It seems to be pretty solid yeah, and ive tried to continually pump it while im trying to hit the higher revs but it still dies out. I had it running wide open throttle for about 10 seconds but it then died and the engine would cut out unless i reduced the amount of throttle i was giving it.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.48,270. Visit site. Mike2309 said: Very simple Mariner5 air-cooled 2-stroke runs fine on half-choke , dies on anything less. I've had the carb off and cleaned it (though, oddly, I couldn't remove the main jet which is held up in place by a plug in the top of the float chamber . With plug removed the jet seems to levitate in the threaded hole ...Here are his thoughts on Hesitation and Bogging Down On Applying Throttle. This is a common problem and is usually caused by a sticking timer base under the flywheel or fouled, clogged carburetors, however… also check the carburetor linkages, compression, spark, and the timer base as follows. Carburetor Linkages: Check the carburetor throttle ...First, service your outboard motor regularly, and check each of the key components carefully to ensure reliable operation. Second, understand how your motor works, and know how to diagnose and resolve problems if it refuses to start or keep running. Third, take a boat safety class and make sure everyone on board abides by the rules.26. May 15, 2006. #1. I have a 1996 Mercury 115 ELPTO that runs perfectly. The problem is that when I am running at full throttle the engine suddenly dies. It doesn't sputter at all. It just dies. Then I can fire it right back up and it will do the same thing again.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 ...5 Reasons Your Toro Snowblower Starts and Then Dies 1. Bad Fuel. 4-cycle (4-stage) Toro snowblowers require unleaded gasoline with an ethanol content of 10% or less.. 2-cycle (2-stage) Toro snowblowers require unleaded gasoline with an ethanol content of 10% or less mixed with 2-cycle engine oil. If you are unsure what type of engine you are running …Read More: How To Increase Compression On A 2 Stroke Outboard The Easy Way. Final Thoughts. We have listed the possible reasons why your boat motor might be losing its power. Additionally, we have also mentioned a few solutions. If all else fails, try contacting a professional to know what is actually wrong with your outboard motor.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 ...Outboard Motors Forum. Yamaha Outboard Forum . Runs on muffs, runs on water, but then dies [Yamaha V4 115 2 stroke] Thread starter Socks_mcgee; Start date Sep 12, 2020; S. Socks_mcgee New member. Sep 12, 2020 #1 Hey all, I've been battling this problem for what feels like eternity now. The motor is a Yamaha, V4 115 2 stroke, …Jul 1, 2011. #2. Re: Mercury outboard dies at idle... Eduardo said: ...and also in forward gear at idle. This happens only after I run the motor at high speed. Then when I put it in neutral or forward gear in idle, it dies not right away but a few minutes later. The only way to start it is if I push the ignition switch to choke.Oct 4, 2020 · If your Mercury outboard run then dies and you need to change your fuel filters on the 2005 Mercury the fuel filter is difficult to find. In this video I wil...70 hp 2 stroke low throttle issue. 04-01-2018, 06:41 PM. Just put my project 1987 70 hp etlh 2 stroke engine in the water for the first time this weekend. only history i knew on the engine was that it came off of a 16 foot bass tracker and had sat unused several years. i cleaned the carbs (three times actually as i missed a jet the first two ...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 ...Outboard Runs Poorly When Idling. The checklist for an outboard that remains running poorly at idle is the same as for when it stalls while idling. However, there's one more thing you can do to troubleshoot an outboard that runs poorly at idle: Clean the Carburetor . Over time, the inside of a carburetor gets coated in deposits left over by the ...Yamaha 90 2-Stroke Runs Rough @1800 rpm. 09-02-2013, 06:34 AM. My 1998 Yamaha 2-Stroke starts easily and will idle and ***** all day long. Under power, it is smooth and strong up to it's maximum 5200 rpm on my 17' Boston Whaler Montauk. The problem I'm experiencing comes in "slow speed zones", where the motor is running at 1600-1900 rpm.Step 3. If the engine stutters and dies or fails to start, check to see if there's enough fuel in the tank. Ensure that the fuel lines are free of kinks and leaks and the connections are all secure. Squeeze the rubber fuel primer to check for any resistance. If you feel resistance, it could mean that fuel is not reaching the engine and the fuel ...Evinrude starts then dies. 06-11-2016, 09:14 PM. Thanks to Joe Reeves help my motor has been identified as a 1988 88 or 90 hp. After replacing the power pack I now have all 4 cyl firing with a nice blue spark. Now it starts up and dies in a second or two, after starting 3 or 4 times it just turns over but not starting.Jun 27, 2012. #6. Re: Engine dies suddenly but starts right back up. That certainly is a factor. Clean or replace all of the large gage wire terminal ends, negative and positive, at the battery and the starter and the engine block. A shorted battery can drain alternator power also, cause low voltage even when running.1995 Evinrude 130hp My outboard did not start and did not have any spark/sometimes intermittent spark. So on a hunch i decided to replace power pack (used) and sure enough that fixed the problem. Now it starts, however, it only stays for about 1 minute then shuts off. It sounds like a fuel...Before coronavirus, video conferences were a largely stale format. The global crisis has forced organizers to get creative—with intriguing results. Spring is a particularly busy ti...Jun 1, 2023 · In some cases, the loss of power in your outboard motor might stem from mechanical problems, such as: 1. Overheating due to a clogged or malfunctioning water pump. 2. Damaged or worn-out drive belts. 3. Issues with the boat’s propeller, such as damage or excessive wear. 4.If your Mercury outboard run then dies and you need to change your fuel filters on the 2005 Mercury the fuel filter is difficult to find. In this video I wil...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 ...4 Common Evinrude E Tec Problems: 1. Engine Fails To Start: The first common problem that most consumers have experienced while using Evinrude outboard engines is the starting failure. Some users even specifically mentioned that the engine cranks like normal but does not start.Aug 18, 2012 · Re: 2000 Evinrude 15HP 4 stroke runs great for 10 minutes, then dies. Forgot to add that the motor now will completely die after 10 minutes. Previously it would miss-fire and degrade, then quite. Now it shuts right off. It will restart after a couple of minutes, but will only run for a few seconds before dieing again.You might try running Sea Foam through it before spending a lot of money or time on a manual clean out or rebuild. Put a pint in 3 gallons of fuel. Run the motor for 15 minutes, then let it stand for 15 minutes. Repeat that cycle 8-10 times. That will clean out any carbon buildup in your motor and should help immensely.3474 posts · Joined 2006. #1 · Jun 4, 2014. For the past 3 weeks or so my Tohatsu 9.8 2-Stroke outboard has been acting up and I'm not sure what could be causing it. When cold (more than 1 hour after the last run), I pull out the choke and it starts on the first pull and I immediately push back the choke. The engine idles nicely, and I give ...It will idle fairly well and then all of a sudden will start sputtering. I then took it to the lake and ran it. I was able to adjust the idle down a little (1200 driveway/1000 lake) but anything below that and it would die. The motor seems to run fine other than at idle. Sparkieboat mentioned to make sure non of the carbs are running lean.Aug 17, 2013 · However a new problem (seemingly) occurs. Poor idle, runs under load for a while then dies out. I've replaced the fuel filter, checked all hoses and everything looks in order. When it dies out, if I manually squeeze the primer bulb it will often fire back up. Maybe the fuel pump is failing or there is restricted flow leading to it.Yamaha VZ150TLRY starts and instantly dies. Last night I changes the VST filter and paper filter in the clear fuel filter on my 2000 Vmax 150 HPDI. I changed it after this past Sunday was on the water and at high rpm's the motor started surging and doing the fuel starving thing. So I ordered the filters and last night went ahead and put them on ...Advertisement The following animation shows a two-stroke engine in action. You can compare this animation to the animations in the car engine and diesel engine articles to see the ...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. 1.8,905. Jun 25, 2013. #5. Re: Yamaha 30HP 2-stroke with only run with choke. if you have to choke it to make it run it is running too lean on fuel and the choke richens it. Pull, take completely apart, and clean carbs better, maybe an ultrasonic bath would be good. Make sure to follow the link and sync steps in service manual after reinstalling ...Fuel-related issues are a common culprit when it comes to power loss in outboard motors. Here’s how they can affect your motor’s performance: Contaminated Fuel: Old or contaminated fuel can lead to engine problems. Water, dirt, or ethanol in the fuel can cause combustion issues and power loss. Fuel Filter Blockage: The fuel filter’s role ...I have just purchased a second hand 2003 2 Stroke Johnson 8hp outboard. Perfect condition, clean almost new (looking) When cold it starts and runs fine. When hot it will not idle and just cuts out. It is then impossible to restart it until it has cooled down to cold! Today (we are in spain) we ran it for 5 minutes at full throttle, it was not ...90% of the time this type of issue is due to gunk in your carb, but before you do a carb rebuild (it's not that hard) remember this. Rule of thumb, you need compression, spark and fuel to make an engine run. Most 9.9hp are two cylinders, this procedure works for two and four stroke engines. Take out the spark plugs.Re: Root cause of Mercury 2-strokes' rough idle. Rough idle is a subjective statement. If all is normal, 2-stroke idle is acceptable. Sometimes near as good as a 4-stroke. Many things can affect idle quality. Probably too many to mention. The one that we fear the most is uneven compression. C.Causes for Lawn Mower Starting then Dying. If your lawn mower starts, runs briefly, then dies these are the four most common reasons that's happening in my experience: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs. Too much oil in your resevoir.. Jul 25, 2019 · 6hp 2 stoke, bogs down and dies at low revs/throtSo I had my motor serviced a few weeks ag While there are a number of reasons why an engine may suddenly develop a "runs only while the fuel is manually enriched situation", the three most common reasons would be: 1) An air leak has developed around the fuel intake or carburetor areas. and is allowing too much air into the combustion chamber. Inspect the fuel lines for cracks or loose ... I'm a beginner with motors so please bear with me. I Mar 24, 2013 · 2007 Mercury 90 2 stroke carb'd. Rebuilt the carbs, new plugs, new filter all around 100 hours or so ago. Maybe a little less. Been running great. I changed the fuel line a couple weeks ago and I've had it out on the water probably 3x since then and it's been good. No different.May 19, 2004. Messages. 27,468. Mar 19, 2010. #5. Re: Have to keep pumping primer bulb.. With the engine not running, give the primer a really good squeeze and look for fuel leaks... If you get them, they're air leaks when the engine is running. That would account for the symptoms you've got. "Have a 1980 model Johnson 70h "Have a 1980 model Johnson ...
Continue Reading