88 mercruser

Broman503

Recruit
Thread starter
Joined
Apr 12, 2010
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2
Have an 3.0litter 4cyl and it is only running on 3 what would cause it to do that.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 88 mercruser

Anything from a bad spark plug to a broken rod.
Start by checking for spark on all cylinders, and do a compression test.
 
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