6 HP 4 stroke dies at WOT

S

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Recruit
Joined
Sep 10, 2007
Messages
2
I have a 2005 6 HP 4 stroke Mercury that sputters and dies after 10 seconds at WOT. Checked gas for water or clogged filters - all was fine. Engine will immediately restart and will run at idle speed or half throddle. Any suggestions as to what I should try next?
 
AEROCOOK

AEROCOOK

Master Chief Petty Officer
Joined
Jul 28, 2004
Messages
872
Re: 6 HP 4 stroke dies at WOT

Try squeezing the primer bulb continiously when at W.O.T. and see if the motor keeps running. If so you have at least narrowed it down to a fuel delivery problem.
 
S

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Recruit
Joined
Sep 10, 2007
Messages
2
Re: 6 HP 4 stroke dies at WOT

Thanks for your suggestion. Had plenty of fuel, not enough spark. Spark plug had a gap of .045??????????? Also had a hairy line crack in the insulator around the electrode. New properly gapped plug remedied the problem. Thanks
 
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