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Old 03-30-2006   #1 (permalink)
vanpraag
Senior Member
250 Grand Prix
 
Join Date: Apr 2005
Location: Tucson, Arizona
Posts: 113
Went to the emissions testing station this morning and failed the Hydrocarbon test. Reading was 2138 ppm, 4 times the max limit. The Carbon monoxide was .5 max 5.00. Question is, what is causing a high hydrocarbon reading??? I'm thinking too lean??? I have the stock map (as far as I know), K&N airfilter and the NGK Iridium plugs. Any ideas???
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