Mechanics

HAS GAS IN THE OIL

1994 Mercury Marquis

Smells problem
1994 Mercury Marquis V8 Two Wheel Drive Automatic 60000 miles

I have a 1994 mercury marquis 60,000 miles. I just changed the oil and it had gas in it. This car is only used to drive about 2 miles a day. Does any one know what could cause this problem. This car probably has not had its oil changed in a year, until today.
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9445ryan
June 21, 2008.



Most likely this is due to a faulty fuel pressure regulator or more likely then not leaky fuel injectors causing the cylinders to get gas in them and since the rings dont seal 100% the gas leaks past them and down into your crank case.

Is it raw fuel or exhaust smell?

Blackop555
Jun 22, 2008.
It smells like raw fuel.

Tiny
9445ryan
Jun 23, 2008.
Would definetely be checking for a fualty fuel pressure regulator and leaky injectors causing the gas to drip in the cylinders, and then into the oil!

Blackop555
Jun 23, 2008.
How would you go about checking a leaky fuel injector?

Tiny
9445ryan
Jun 24, 2008.
Your best bet would be hook up a fuel pressure test guage to the fuel rail and get the pressure up and then turn it off and wait, compare the amounts it drops to specs, should drop a little less then 1 psi per minute.

Blackop555
Jun 25, 2008.