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Problems passing california smog check 98 Civic Ex
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ellupo
New User
| Posts: 1
| Joined: 10/09
Posted: 10/19/09
11:44 AM
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I have an 98 Civic Ex (1.6L Vtech, SOHC, 16Y8). It has 200'000 miles, but the engine is in great shape (no oil burning, no leaks, etc).
2 years ago it failed the smog check pretty bad. I ended up replacing both O2 sensors and the Cat. That was about 30'000 miles ago. Now it failed again. My numbers are as follows: %CO2: 14.5, %O2: 0, HC: very high (about double the allowable max), CO: high (about a third more than allowable), NO: very low (about a third less than average).
Anybody has an idea what could be wrong? Tune ups done regularly.
Thanks for the help in advance.
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