Did not pass smog test

1989 CADILLAC DEVILLE
181,938 MILES • 4.5L
Avatar
MARTINEZ ADRIAN
  • MEMBER
  • 1 POST
No (PPM) failed. Measured 869 max was 537 and 930 max was 494. The fuel hoses going into fuel tank were leaking fuel. I didn't tighten them enough. Could that have helped fail me test?
Jan 16, 2020 at 4:30 PM
Advertisement
Avatar
KASEKENNY
  • CERTIFIED EXPERT
  • 18,907 POSTS
It could have, but let's run through this guide because it is more likely that you have another engine issue. It points out a number of issues that would cause this failure. Basically you have too much hydrocarbons in the exhaust so this could be caused by a misfire or one of the other things mentioned.

https://www.2carpros.com/articles/smog-test-inspection-information

Do you have a check engine light or is this running rough?
Jan 16, 2020 at 4:45 PM