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Author Topic:   Evinrude 25-HP loses power and stalls
Digs1622 posted 05-16-2002 07:23 PM ET (US)   Profile for Digs1622   Send Email to Digs1622  
I was out running my 1991 13'ss/25hp evinrude the other day in some light to moderate chop. I was the only passenger and I had it cranked up as far as it would go and after about 500yds it went from 35 to 15mphs in a flash. When I tried to throttle down the boat stalled. It started right back up but the process would repeat itself after 200yds or so.

Anyone have any ideas whats going on here? Trim maybe? Wet plugs? Im guessing at this point.

Any help would be appreciated!


Dr T posted 05-16-2002 07:52 PM ET (US)     Profile for Dr T  Send Email to Dr T     
Clogged fuel filter, possibly.


David Ratusnik posted 05-16-2002 09:09 PM ET (US)     Profile for David Ratusnik  Send Email to David Ratusnik     
A year ago experienced a similar problem with my 225 Johnson. 2 bad coils. fyi David
Tom W Clark posted 05-16-2002 09:24 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     

Start with the obvious and easy stuff first.

This sounds like a classic fuel starvation/restriction problem. Check the fuel hose, primer bulb, any fuel filter you may have, and the vent on the fuel tank's gas cap.

Indeed, if the primer bulb is collapsed when the problem reoccurs then this reinforces the likelihood of a fuel restriction.

88 Montauk posted 05-17-2002 09:42 AM ET (US)     Profile for 88 Montauk  Send Email to 88 Montauk     
Another likely candidate is your plugs wires if they have never been replaced.
SeaHag posted 05-17-2002 02:21 PM ET (US)     Profile for SeaHag  Send Email to SeaHag     
I just had what you describe. I have a 175 Ocean Runner. I just replaced the plugs, filter, relay, and ignition timer. The latter was discovered when I was tinkering around with some other stuff.

Runs like a champ now.

Digs1622 posted 05-18-2002 12:40 PM ET (US)     Profile for Digs1622  Send Email to Digs1622     
Thanks for the responses! I will look into them. One thing I did notice, was that, prior to start, the primer bulb was rock hard. Does that say anything?


LKS posted 05-20-2002 01:05 PM ET (US)     Profile for LKS  Send Email to LKS     
Water/condensation in the fuel would be my first thought. And I'd look at the vent, to make sure nothing clogged it up over the winter. If neither is the problem, check fuel filters. If still a no go, move on to checking plugs, coil, wires, etc. For us, it's always proven to be bad fuel or gummed up filters. Best of luck! -- LKS
Steve Leone posted 05-22-2002 03:39 PM ET (US)     Profile for Steve Leone  Send Email to Steve Leone     
fuel has got my vote. either contaminated with water, fuel pump diaphram, carbs, pinched line, some kind of starvation or restriction or not enough flow. before you spend any money TAKE A COMPRESSION TEST. this is good advice. steve out.
Jerry Townsend posted 05-22-2002 07:42 PM ET (US)     Profile for Jerry Townsend  Send Email to Jerry Townsend     
DIGS* - remember - electrical and ignition problems do not fix themselves. As many have suggested - check for fuel starvation possibilities first - filter, pinched lines, bulb, ---- Jerry/Idaho
Digs1622 posted 05-23-2002 07:06 PM ET (US)     Profile for Digs1622  Send Email to Digs1622     
Once again thanks for all your responses. And the answer was......Loose fuel line to the tank. I wouldnt have noticed it til I was pulled the tanks out(2 6 gallons) and reattached the lines and saw the fuel line was loose and gas was running down the side of the tank. Tightened the clamp...and nooo problems!!!!!
mudpuppy posted 05-23-2002 07:26 PM ET (US)     Profile for mudpuppy  Send Email to mudpuppy     
Remember, one of the first things to check is telltail--the stream of water indicating that your engine is pumping cooling water. If the engine quits and then restarts for a little while, then quits, restarts, etc, it just might be overheating, cooling off, overheating, etc. And then restarting it can really tear things up.
jimh posted 05-25-2002 12:31 AM ET (US)     Profile for jimh  Send Email to jimh     
[Changed topic; was "Problem!"--jimh.]

A general procedure for diagnosis of engine problems is to verify the engine is being supplied (in the correct proportions) with the three elements needed for combustion: AIR, FUEL, FIRE.

You have resolved your problem by discovering the lack of FUEL. This is valuable because it reaffirms the validity of the diagnostic technique mentioned above.

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