I'm afraid I know the answer but I'll ask any way. What would cause the oil and gas mixture to come out of the prop exhaust when the gas bulb is pressed?
I'm afraid I know the answer but I'll ask any way. What would cause the oil and gas mixture to come out of the prop exhaust when the gas bulb is pressed?
Strange...the only way for this to happen is through leaking lift pumps or stuck open injector which is unlikely. Have you checked compression?
I have not checked compression, however it is only gas , not gas and oil, coming out. I found this after removing the lower unit. The motor seemed to have plenty of power but would run out of gas then run again after pumping the fuel ball.
Last edited by grassycreek; 04-08-2012 at 08:40 AM. Reason: Misspelled words
Also, there is no leaks anywhere on the engine under the cowling. Could the fuel pump cause the gas to run out the exhaust?
Replace your low pressure fuel pumps.
Ditto on the low pressure fuel pumps. You have raw fuel leaking from behind the pumps into the combustion chamber(s). Loosen each pump and pump the bulb. My bet is one or all are leaking like a seive. Check this or you will definately burn a piston. Other option could be a stuck injector.
X2 low pressure pumpsOriginally Posted by 201pro
2002 Pathfinder 2400V
2002 Yamaha 225 OX66
Low pressure pumps replaced and it fixed the problem, thanks everyone!
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