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Help! My sis's car failed emissions! 200

posted by  ///revolver on  Sat Sep 18 14:57 CST 2010
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last visit: Sat Aug 4 05:40 CST 2012
[RELATED]

Hi folks,

I just found my sis a low mileage 93 240, and she is trying to register it in DC.

We did these tune-up items before she failed inspection:

plugs (bosch copper)
wires (bosch) (w/dielectric grease)
rotor (bosch)
cap (bosch)
flame trap
oil separator
timing belt
front engine oil seals
cleaned throttle body
new throttle body gasket


Vacuum lines were in good shape it seemed, though now I wish I had put little zip ties on all of them.

Do these failing values suggest anything to anyone?

HC: reading: 1.7489; limit 1.200 FAIL
CO: reading: 15.5801; limit 20.000 PASS
NOX: reading: 2.8444; limit 2.500 FAIL

Gas cap test also failed.

One final piece of information is integral to this question. Someone I met while I was working on this car told me that I should advance the timing a little bit by rotating the distributor counter-clockwise to get it to start up better. He did it, and sure enough the car starts up in a flash, but I hope this didn't cause the car to fail emissions.

Thanks so much folks.





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