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Running Rich/Fuel in the exhaust 200

posted by  volvostud on  Mon Jun 27 02:53 CST 2005
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last visit: Mon Sep 28 16:34 CST 2009
[RELATED]

I had noticed a slight fuel smell in my exhaust, so this weekend I borrowed a PID (used to test volatile organic chemicals (VOCs) in the air/atmosphere) from the office (I'm an Enviro. Eng.). As I suspected I have about 150ppm of gas in my exhaust. I did not test one of our 2005 trucks to see how they test, but this number seems high. I then tested the vacuum line from the FPR and found it to have about 50 ppm.

I tested my O2 sensor last week and it is fine. What else could be causing this problem? Shouldn't my catalytic converter burn this gas off?

This car has never in all it's life failed an emissions test.
--
85 240DL 189k; 91 240 169k






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