My 1994 Chevy Astro van failed Cailifonia smog because the HPC measured 61 and the limit is 53. My question is how do I correct it. It was not driven for over a month before the test.

Asked by GuruW4CJ Mar 30, 2017 at 02:35 PM about the 1994 Chevrolet Chevy Van

Question type: Maintenance & Repair

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F_O_R answered 7 years ago

I assume you mean HydroCarbons? I would fill up with premium and drive if for a while but first I would tune it up - new plugs, filters etc. If this does not work you may need a new catalytic converter. California (head slap) is becoming a nightmare. There is a voucher program that might help you out --- http://www.smogtips.com/consumer_assistance.cfm

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GuruW4CJ answered 7 years ago

thanks, will try tune up

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My 1994 Chevy Astro van failed Cailifonia smog because the HPC measured 61 and the limit is 53. My question is how do I correct it. It was not driven for over a month before the test. 2 Answers

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My 1994 Chevy Astro van failed Cailifonia smog because the HPC measured 61 and the limit is 53. My question is how do I correct it. It was not driven for over a month before the test.

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My 1994 Chevy Astro van failed Cailifonia smog because the HPC measured 61 and the limit is 53. My question is how do I correct it. It was not driven for over a month before the test.

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