1994 Mercury Marquis has gas in the oil

1994 MERCURY MARQUIS
60,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
9445RYAN
  • MEMBER
  • 7 POSTS
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.
Jun 21, 2008 at 9:16 PM
Advertisement
Avatar
BLACKOP555
  • CERTIFIED EXPERT
  • 10,386 POSTS
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?
Jun 22, 2008 at 1:45 PM
Avatar
9445RYAN
  • MEMBER
  • 7 POSTS
It smells like raw fuel .
Jun 23, 2008 at 9:54 AM
Advertisement
Avatar
BLACKOP555
  • CERTIFIED EXPERT
  • 10,386 POSTS
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!
Jun 23, 2008 at 8:11 PM
Avatar
9445RYAN
  • MEMBER
  • 7 POSTS
How would you go about checking a leaky fuel injector?
Jun 24, 2008 at 10:00 AM
Avatar
BLACKOP555
  • CERTIFIED EXPERT
  • 10,386 POSTS
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.
Jun 25, 2008 at 7:07 PM