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Nitric Oxide Smog Test

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Old 11-02-2006 | 04:26 PM
Herbie's Avatar
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Joined: Nov 2006
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Default Nitric Oxide Smog Test
Hi Im in California, my 91 civic hatchback just failed the NO emissions standard. It passed the other measurements just fine. Im discovering this is likely the EGR valve? Anyone have any knowledge or experience with this, before I spend the $160? Thanks.
 
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