1987 Mercruiser 3.0 Won't Idle

cburkhardt

Cadet
Joined
Oct 8, 2011
Messages
18
I got my engine running but it will only start and run at full to half throttle. As soon as you pull back the throttle it dies. I just replaced ignition coil and contact points. Any suggestions?
 

BruKen

Seaman Apprentice
Joined
Feb 26, 2014
Messages
48
The obvious avenue is electrical. Check condencer, dwell angles etc. However! Having just undergone the exact same issues myself on that engine tripple checking all electrical bits it turned out to be the carb. The float levels were wildly out. Why it ran so well before the annual service with the carb that way and not after it begs the question but it solved my issue at least.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,469
I got my engine running but it will only start and run at full to half throttle. As soon as you pull back the throttle it dies. I just replaced ignition coil and contact points. Any suggestions?

Ayuh,..... Welcome Aboard,... Sounds like ya got the ignition covered,....

My guess is the idle circuit in yer carb is plugged up,....
 
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