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1991 Buick Regal Engine Running Rich

Tiny
IMIKEC
  • MEMBER
  • 1991 BUICK REGAL
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
Will running my Buick 3.8 liter engine to rich, cause much problems later? My gas mileage is a little worst I think? Are there other things to look out for?

Please help, with answers, and thank you!
Monday, November 30th, 2009 AT 7:25 PM

1 Reply

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
Are you running your engine rich on purpose? If so, I advise you to stop immediately.

Running rich will allow too much fuel to enter your cylinders, which can't be all burned away during the power strokes. This washes away the oil on the cylinder walls that is needed to protect your engines piston rings from excessive wear. This will drastically reduce the life span of your engine.

Also, running rich for any extended period of time will destroy you catalytic converter. And you will fail an emissions test.
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Wednesday, December 30th, 2009 AT 8:44 PM

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