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My 96 johnson 25hp boat motor will run for a few minutes at full speed then will die and it takes a while to get it started

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Try changing the squeeze ball it sounds like its not passing fuel

Posted on Sep 13, 2016

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MAKE SURE THE WATER PUMP IS WORKING AND THE ENGINE IS NOT OVERHEATING THERE MAY BE A TEMP SENSOR THAT SHUTS DOWN THE IGNITION SYSTEM IF OVERHEATING CHECK FOR SPARK AT PLUGS AFTER ENGINE CUTS OFF..

IF HAS SPARK AT PLUGS AND STILL DOSEN'T RUN CHECK FUEL LINES TO CARB .

IF THATS OK SUSPECT FUEL FILTER /STRAINER /FUEL PUMP / CARB PROBLEM


HOPE THIS HELPS

Posted on Aug 08, 2010

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1 Answer

Mercury boat motor troubleshooting


Could be a fuel issue. You don't say how old your motor is, but if it is 10 yrs or older, there is a good chance it does not process regular highway fuel very well. Too much ethanol. Makes the fuel separate after warming up. Your engine will normally start fine, but after getting warm, will either stall out at low speeds, or won't start after shutting down. Try a good additive to reduce the ethanol effect. Most boat docks with fuel pumps also sell the needed blend of gas for marine engines. Thus, a few more cents per gallon, but less problem for you. I mixed a good additive to my 20 yr old Johnson 115, and it runs like a new one! Hope this helps. Good luck !
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Trying to get lower unit off a 88 25hp evinrude motor


www.youtube.com go there and type water pump replacement 25hp Johnson or evinrude. You can also go to
http://shop2.evinrude.com/Index.aspx?s1=gett3uheq5c0nce2mjg11d1eh0&catalog_id=0&siteid=1


Thank you, Lewis Hot Headz Marine

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1 Answer

Johnson 88SPL (1990) dies immediately upon accelerating after running at 1/2 speed for 1/2 hour


Are you sure your tanks and filters are clean? Sometimes its takes minutes or much longer periods of time for the trash to finally clog the filter. Im not sure how but after a period of time the trash can fall back away from the filter and then it runs just fine until this happens again. I spent two months trying to figure this out on a car. Look at your filter and whats in it. Its worth a try. Coils sometimes can heat up.

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What is the corrct fuel mix for 2005 25hp johnson


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2 Answers

40 Hp Johnson outboard motors stalls out after a few minutes running then takes forever to start again


May likely be one of two problems:

1. Fuel flow: Make sure fuel tank vent is open and not blocked while engine running. Check primer bulb is working and no air leaks along hose anywhere. Check function of fuel pump and ensure fuel is getting to the cylinders.

2. Overheating: Check engine isn't overheating and that water pump is operating properly while engine is running.

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1 Answer

My 175 hp 1998 johnson (carbeurated model) is hard to start. When started it seems to run ok, but after motoring for 10 or so minutes, will just die.


Sounds to me that your carb is plugged up. I would take it apart and clean it. Also make sure your idle mixture screw is set to 1 1/2 turns out to start and adjust from there.

Aug 13, 2009 | Boating

1 Answer

1974 johnson outboard motor 25hp stalls when hiting high end


Not familiar with that specific motor but had similar vintage smaller HP Johnsons. From my experience it sounds like it could be that the high speed carb adjustment is too lean. What I would try is running the backing off the high speed screw 1/4 turn to 3/4 turn, then test. If works better, screw back in in 1/8 turn increments until the problem recurs, then back out 1/4 turn and leave it there.

Jun 30, 2009 | Sport & Outdoor - Others

1 Answer

Motor died when I slowed down, and wouldn't crank again


Some motors have limit switches built in to kill the ignition if the motor is started at odd angles. The trim is different for speed and passenger load. The limit switches may be adjustable to eliminate that problem. Usually when you go to dock the boat will fish tail if the trim is too extreme for slow speeds.

Apr 07, 2009 | Boating

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