2000 Yamaha 150 OX66

Seaplus

Cadet
Joined
Oct 10, 2007
Messages
7
When priming my OX66 with the primer bulb I noticed that it wasn't getting firm but could tell it was pumping gas then I discovered thare was gas leaking from the exhaust at the prop. What would allow the gas to flow completely through the engine when priming engine? Any help would be appreciated.
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
9,127
Re: 2000 Yamaha 150 OX66

Fuel pump has a hole in it and leaking into crankcase
 

crjron

Cadet
Joined
Apr 27, 2011
Messages
18
Re: 2000 Yamaha 150 OX66

Had the same thing happen on my 2001 ox66 200. I bought two new low pressure fuel pumps ($37.50 each) and new gaskets. (boats net) Fixed the problem and bulb is firm. RV
 
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