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Mr Ranger
 
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Default Update: 350 Mercruiser - Gas in oil - STILL!

Gas has been seeping into my oil. I took the advice of several here and
installed a new float. The old float was some plastic looking composite
material, I assumed that it may be absorbing gas. I replaced it with a
brass float and adjusted it to 1/4". The exact adjustment for my carb I
was unsure since the numbers on my carb did not match up to anything I
could find on the net (MCM 260/270 1347-8292). The 1/4" was the
recommended setting for the majority of Rochester Quadrajets listed.
After installing carb I noted that a problem I had with starting had
disappeared. When ever I would attempt to start my boat after setting
overnight, the boat would start and then immediately die. I would then
pump the throttle once and it would start and then run great. Now it
starts without stalling. I took this as a good sign and figured I
probably had solved the gas in oil problem. Wrong! After running the
boat 5 trips of 12 miles I was disheartened to see the oil level up by
about a quart of gas.

I am now going to change the fuel pump again, in the chance that the pump
I installed last winter is defective. If that dosn't do it I will go
back to the carb. Any thoughts as to what else I could do? I was
wondering if perhaps the float needle could be defective? Other Than the
gas in oil, the engine runs perfect. Any Ideas?

Thanks, Mr Ranger

 
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