93 model 90hp evinrude

waits

Recruit
Joined
Feb 12, 2006
Messages
4
This motor will not run on #4 cylinder at idle.Most of the time it will die when you put it in gear but if you get it going it will run fine at mid-range and WOT..I have tried just about everything i can think of.Good compression and leak down test,it is not the carbs because i have even tried a different carb.Removed vro and put regular pulse pump on engine, good spark,no fuel leaks,new plugs,reeds look ok and so on.....Any body have any ideas...running out of them..
 

ob

Admiral
Joined
Aug 16, 2002
Messages
6,992
Re: 93 model 90hp evinrude

How did you determine that #4 cylinder has an issue at idle?
 

waits

Recruit
Joined
Feb 12, 2006
Messages
4
Re: 93 model 90hp evinrude

pull plug lead on and off and get no response...
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: 93 model 90hp evinrude

How do the spark plugs compare in appearance after a run?
 
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