2004 yamaha 150 hp 2 stroke

MRIDDLE

Recruit
Joined
Jan 20, 2012
Messages
2
1 of the six spark plugs is completely dry and the engine will not exceed 30 mph!!
 

erniefish

Petty Officer 2nd Class
Joined
Dec 11, 2007
Messages
153
Re: 2004 yamaha 150 hp 2 stroke

first, i would assume it is a carb issue, spray some fuel in carb throat that is dry, first try idle, then try at speed(needs 2 people), that should determine whether you need to take off carbs and clean, remember you must remove airbox first, good luck let us know what happened
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: 2004 yamaha 150 hp 2 stroke

take your carbs off and clean them real good, a soak in laquer thinner will get unseen passages.
 
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