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1998 Chevy Lumina EGR

Tiny
BILL1806
  • MEMBER
  • 1998 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 180,000 MILES
I found what appears to be a water and oil mixture getting to the EGR valve. It is thick and pale in color kind of like grease. What is this and what is causing it.
Wednesday, February 20th, 2008 AT 7:53 PM

2 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check the intake manifold
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Wednesday, February 20th, 2008 AT 7:57 PM
Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
Leaking lower intake manifold gaskets will cause this. Also, a bad throttle body gasket can cause it. Some of the throttle bodies have coolant passages that are sealed by this gasket.
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Thursday, February 21st, 2008 AT 8:49 PM

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