Regular Smog Check
STAR Smog Station
Smog Check Repair
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Which Type Should I Choose?
Smog Check & Emissions Questions and Answers
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High CO
Question
Answered
My 1982 GMC Chevy Lazy Dase motorhome failed the EVAP test during a smog check pre-test.
by
James
Yes (1)
1990 Chevy Corvette failed smog test for high NOx for the first time since new!
by
tal
Yes (1)
1996 Dodge Stratus ES failed NOx at 15MPH, everything else passed, rpm during 15mph was usually high. Why?
by
Steve
Yes (1)
1993 Chevy Suburban 5.7L Is ignition timing 0 or 8 degrees BTDC?
by
sam
Yes (1)
2002 Mitsubishi Eclipse GS 2.4 failed smog check for high NOx. Does it need a new CAT?
by
Laura
Yes (1)
1982 Chevy P30 failed smog check for high CO.
by
Les
Yes (1)
Toyota Corolla failed smog test and has very high idle.
by
Fellissa
Yes (1)
Out of state Mitsubishi Galant won't pass smog check
by
Derek
Yes (1)
Toyota Camry passed HC on smog check but failed CO.
by
Lou
Yes (1)
Acura Legend failed smog check for high NOx
by
Sophia
Yes (1)
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