Question about 1988 Chevrolet Nova

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Will not pass smog. what could be the problem

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It is burning to much gas, could be that it needs a tune up.

Posted on Mar 13, 2011

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The problem is it pollutes ... Your real question should be why does it pollute? The answer to that is your engine is not burning correctly. Since it is not burning correctly, you probably over powered your cat converter. It goes down hill from here.

Why does it pollute? Bad spark plugs, poor spark from the distributor, dirty air filter, bad gas, engine not in proper time, poor driving habits, failed oxygen sensor, clogged/faulty EGR, cat converter is more than 20 years old, air pump not functioning properly.

Get a good, professional tuneup and your car will stop polluting and pass the "smog' test.

Thanks for your question @ FixYa.com

Posted on Mar 13, 2011

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