Mercury 9.9 1994 misfireing at full throttle

noelschembri

Recruit
Joined
May 16, 2006
Messages
3
Hi, Ive got this merc 9.9 which is starting and idling properly, then at full throttle it starts misfireing and knocking. I cleaned carbs, replaced plugs and still same. compression is 75 lb/ sq in on both.<br />please help<br /><br />thanks
 
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