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About smog tests, does the machine automatically fail vehicles that are 300,000+ miles?


I failed smog. They told me to change plugs and wires, oil air filter and I put another rotor, and they did the timing. And I put new pcv valve. The first time I failed the hydrocarbons was only 1. Now the second time after all this work they are telling me the hydrocarbons are 11. Huh? What?

 

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WheelScene says

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Max (Emissionguy) says

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bob mech says

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