Ontario canada drive clean emission test failed.High NOx reading.Limit is 636 and the reading was 976(ppm)Can anyone offer some advice? All other readings passed with flying colours.I don't want to spend the hundred bucks on a diaognostic.Might have to though.I was told it could be the pcv or the egr.Hoping its the pcv.The egr is 450 bucks.I bought a new pcv, air filter and oil filter and oil.Anything else I should do? Rev the hell out of ot to blow the cat out? Any advice would be helpful.
Thanks
Mike
Thanks
Mike