170hp merc hesitation

lewski

Seaman Apprentice
Joined
Mar 23, 2011
Messages
35
hi, i have an 1986 170 merc that the enigine hesitates only at full throttle, any ideas, thanks.
 

conk3416

Petty Officer 3rd Class
Joined
Jul 25, 2009
Messages
76
Re: 170hp merc hesitation

I would start with changing the plugs and wires
 
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