97 120 hp mercury Force idle problem

hoyt101

Recruit
Thread starter
Joined
Jul 31, 2006
Messages
2
Was out this weekend and 1/2 way through the day the idle would start surging form 1000rpm to 3000rpm. I just ran it all last week and had no
problems could anyone give me an idea where to start.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,961
Re: 97 120 hp mercury Force idle problem

Suspect you have dirt in the carbs, causing the problem. Time to clean out the gas tank(s) and fuel line, then rebuild the carbs.
 

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: 97 120 hp mercury Force idle problem

A motor that hunts tends to run lean so you want to get it fixed before it causes damage. Another place to look is all the rubber hoses especially around the quick disconnect. Air may be getting in.
 
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