MerCarb idle problem

Regal4Me

Recruit
Joined
May 31, 2003
Messages
4
1985 Mercruiser 170, 2 barrel MerCarb:<br />runs great WOT... runs great when I first start it, choke. Warms up OK and then... idle varies from stalling to 2000 rpm, no real control... I had to backout the idle mixture screw 3 1/2 turns to keep it from stalling.<br /><br />I just put a new float in the carb but, wasn't sure which way the spring went in (in front or, behind the carb fuel filter)?<br />Timing is at 4 degrees per latest service bulletin I could find.
 

Trent

Captain
Joined
Nov 17, 2001
Messages
3,333
Re: MerCarb idle problem

It may not be your problem but check this out?<br /><br /> Carb
 
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