86 Force 125 missing at idle

Buds Dad

Cadet
Joined
Apr 3, 2006
Messages
6
i checked the timing and changed the plugs,cleaned carbs and fresh fuel.The motor seemed to run better after I changed the plugs then went back to the miss after a short time.Seems like a hard miss at idle then shuts off imediately.Idles at around 900 in neutral and about 800 in gear.Top end seems to be fine.Getting about 4800 to 5000 rpms.pulled the plugs and they all looked good.I think it might be a coil but not sure how to isolate it.I have a clymer manual but cant find the info Im looking for.Any help would be greatly appreciated.It has the Prestolite ignition.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,667
Re: 86 Force 125 missing at idle

Just check for a good strong spark on each plug. If you find one that is weak, swap that coil with another one, and recheck spark. See if the weak spark moved to the plug where you moved the coil to.
 

Buds Dad

Cadet
Joined
Apr 3, 2006
Messages
6
Re: 86 Force 125 missing at idle

I checked the spark and they all look good.the miss is not steady its more irratic I guess you could say.
 
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