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Old 12-09-2003, 06:06 PM
hawkpfc2 hawkpfc2 is offline
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Join Date: Aug 2000
Posts: 71
on my M103, I found an exhaust leak had caused the problem. prior to that I was getting I think a 131 out of a 126 on HC. after that I was about 30. NOx also declined similarly. I don't have the numbers in front of me though. Even a tiny air leak will totally mess up the emissions system.
currently just 1989 300SE 185k miles
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