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Q: Can't pass smog check due to misfire

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I keep failing my smog check. My engine is also misfiring.

If your engine is misfiring it will not pass a smog check. The engine needs to be in good running condition in order to pass. I suggest having an expert mechanic, such as one from YourMechanic, inspect why your engine is misfiring and help you pass the smog test.

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