3.0 runs rough

cdt785

Seaman
Joined
Sep 4, 2011
Messages
50
Hi. I have a 1997 Campion bowrider with a 3.0 Mercruiser engine. Last week wife and I took it out for first ride of the season and had no problems at all. Really ran nice. Took it out today and it ran rough right from the start. Didn't want to idle and shook...like it had a miss in it.Could the carb go out of adjustment that fast? still has gas from last October. I did put a new distributor cap last year. Cant figure out how it ran great one week, to terrible today. Any ideals would really be apreciated. could a bad coil make it run really rough? Thanks again.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,309
Re: 3.0 runs rough

Hi. I have a 1997 Campion bowrider with a 3.0 Mercruiser engine. Last week wife and I took it out for first ride of the season and had no problems at all. Really ran nice. Took it out today and it ran rough right from the start. Didn't want to idle and shook...like it had a miss in it.Could the carb go out of adjustment that fast? still has gas from last October. I did put a new distributor cap last year. Cant figure out how it ran great one week, to terrible today. Any ideals would really be apreciated. could a bad coil make it run really rough? Thanks again.

Ayuh,.... My guess is Bad, or contaminated gas... Check, 'n change the fuel filters....
 
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