72 100hp evinrude

toey77

Petty Officer 2nd Class
Joined
Dec 12, 2008
Messages
158
Re: 72 100hp evinrude

electric shift??
could there be a short or a earth problem with the solenoids causing a electrical short through a safety cut off?

I aint no mechanic just how my brain thought no real technical advice just a thought. hopefully someone will come along to help you out
 

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: 72 100hp evinrude

That engine will run fine at idle on 2 cyls. As soon as you put it in gear (load up the engine) you will see any real problem. Possible that the engine is not firing on all 4 cylinders. Check spark when the engine is under load (idling in gear at the dock) by putting an inductive timing light on each plugwire. The flashes from the gun will show weak spark, no spark, and misfires. Does the engine run ok at higher rpms?
 
Top