3.0 mercruiser 1992,Runs rough at start up?

lilrags

Recruit
Joined
Apr 19, 2002
Messages
2
I have a 1992 chapparral 1800sl limited with a 3.0 mercruiser I/O. The engine only has approx. 100 hours on it since new. When I start engine it runs very rough and shakes alot, as it warms up, it begins to smooth out and rpm's increase. Could this be a choke adjustment problem? or in need of a tune up? Please help..
 

Trent

Captain
Joined
Nov 17, 2001
Messages
3,333
Re: 3.0 mercruiser 1992,Runs rough at start up?

Sounds like the choke could use some adjustment. When it warms up the choke opens up and then it runs good. Loosen the screws on the choke assembly (#2) and turn to adjust a little and retry.<br /><br /> web page
 
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