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Working on friends car,2002 grand am found gas in the oil, why?

(2002 Pontiac Grand Am)
in Mattoon, IL on November 15, 2012
3.4l changed oil , next day found gas in oil again,i am baffeled, can you help
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Popular Answer
on November 15, 2012
Check for defective fuel pressure regulator. Remove vacuum hose to the reg., eng.off, and see if gas is in hose.
if so reg. is shot.
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