Regular Smog Check
STAR Smog Station
Smog Check Repair
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Smog Check & Emissions Questions and Answers
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High NO
Question
Answered
1987 Volvo 240DL 2.3L automatic - Very high NOx. Has new CAT.
by
jim
Yes (1)
1995 4.0l I6 Grand Cherokee failed NOx emissions 25 mph test. My scores are 1086 Max: 533.
by
justin
Yes (1)
1995 Nissan Pathfinder failed smog check for high NO. What's wrong?
by
Joe
Yes (1)
Ford 1986 Bronco II - Can I replace the Catalytic Converter myself?
by
Steven
Yes (1)
Should our 1976 GMC Pickup have a catalytic converter?
by
Christina
Yes (1)
1989 Mitsubishi Galant. Failed smog check for high NO (PPM) emission. Max 559, Meas 635
by
myrna
Yes (1)
I have a 1989 Jeep Wrangler with a 6 cylinder engine. It has a carburator. I failed my smog test.
by
david
Yes (1)
1991 Lexus LS400 failed test smog test for high HC.
by
krk
Yes (1)
1988 Ford Thunderbird failed smog inspection due to high HC.
by
Maria
Yes (1)
1993 Isuzu Trooper has high CO, check engine light not on, and it failed the smog test.
by
ram
Yes (1)
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