Thread: HiGH NOx smog test need any help to pass!!
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Old 06-20-2009, 08:06 AM   #10
w0nderbr3ad
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check the vacuum hoses leading from the egr to bpt valve. theres a 90* bend vaccuum hose that usually gets eaten up. My nox read about 4000 when I did smog and I fixed that and ran fine. Check all the other vacuum lines behind the head as well.
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