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Old 07-08-2004, 07:59 PM
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sixto sixto is offline
smoke gets in your eyes
 
Join Date: Jun 2000
Location: Eastern TN
Posts: 20,841
High NOx readings mean combustion temps are too high. EGR reduces combustion temps so start with that. If the spark timing was 10-degrees too advanced that might contribute to high combustion temps as well.

The folks at www.club4ag.com might have specific information.

Sixto
95 S420
87 300SDL
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