2002 Chevy Avalanche Oil in exhaust

Tiny
EWINGERICR
  • MEMBER
  • 2002 CHEVROLET AVALANCHE
  • V8
  • 4WD
  • AUTOMATIC
  • 75,000 MILES
Recently when starting my vehicle, it began spraying a small amount of oil out of the tail pipe. Once the engine starts there doesn't appear to be any additional oil loss as there is no smoke. There also does not appear to be any oil leaking from the engine area. This problem makes a mess on my garage wall and requires me to add oil to the truck. What could be causing this problem and how do I fix it.
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Wednesday, July 21st, 2010 AT 7:00 AM

1 Reply

Tiny
JACK42
  • EXPERT
Are you sure itis oil? It may be that the cndensation is building up in the tailpipe and when you start it the moisture is mixing with the soot in the exhaust and spraying it out. Oil doesnt make it that far in the exhaust, it is almost always burned through combustion. There should be a drain hole in the bottom rear edge of the muffler that is meant to drain out this moisture, do you have an aftermarket muffler or factory?If aftermarket, drill a small hole in the bottom rear of it to allow for this to drain. Newer cars burn very efficient and condensation is just part of the by-product of that
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Wednesday, July 21st, 2010 AT 8:27 AM

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