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1973 4HP Evinrude, Starts, runs 5-10 min, then stalls. Will restart, sometimes on one cyl...

Z

zzr7ky

New member
Hello all -

I am new to smaller outboards. I inherited my childhood favorite 1973 Evinrude 4hp 4336 C.

I replaced the fuel lines, bulb, installed a good sized fuel filter in the fuel line, and.... no start. It started when fuel was sprayed into carb. So I went through the carb. Cleaned, reassembled. backed the low and high speed adjustments off 1 1/2 turns (560 degrees) and it starts!

After 5-10 minutes it will falter and stall. Speed doesn't matter. Pumping the fuel bulb doesn't affect it. Sometimes on re-start it will just run on one cyl.

I am unfamiliar with the ignition system.

I can say the cyl head is cool to the touch even after running a while.

Any thoughts?
THANKS!,
Mike
 
Also should add I have a fuel pump kit here. I did see a spurt, spurt of fuel as the engine is turned over by hand. That and the no response to the fuel bulb being pumped leads me to think not fuel... I also took cap loose on the tank.

Eager to learn.
 
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