70 HP rough idle

smittylv1

Seaman Apprentice
Joined
Mar 15, 2013
Messages
45
1983 70 HP Blue band with a rough idle.....power and top end is good 5000 rpm
Question: Should I adjust idle mixture? What's the best way? I do a lot of low speed trolling with crank baits.
 

1nebel0

Chief Petty Officer
Joined
Nov 28, 2005
Messages
512
Re: 70 HP rough idle

First is your timing setup correctly...Are you carbs lync and sync...lastly adjust idle mixture in gear tied to the dock..Best way and most accurate way...if you get a stumble when you goose it, you are too lean and turn out each screw 1/4 turn more(richer)...
 
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