charcoal canister - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-27-2004, 02:41 PM   #21
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How does the egr removal result in burnt valves? I'm not trying to be cocky or anything(the internet is a great place for taking things the wrong way). I just want to understand why it happens???
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Old 09-27-2004, 04:05 PM   #22
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The EGR actually LOWERS combustion temps by displacing a small amount of oxygen. The PCM still maintains the proper Air Fuel Ratio, though. On a non-egr'd car, your compustion temps will be hotter than on an identical EGR car, resulting in burnt valves.
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Old 09-27-2004, 09:50 PM   #23
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Hmmm. interesting. Thanks!
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