Failed AZ emissions

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915.0Hatch - 05 Jan 2006 01:28 GMT

I have a stock 91 GT that failed the AZ emissions test today, the
results are as follows: HC = 2.53 / 1.00 standard , CO = 14.76 / 12.00
standard, and it passed the NOX test. Any tips on getting it to pass?
My first reaction is to replace the cats, but as far as anything else I
have no idea. Thanks for any help in advance.

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Joe - 05 Jan 2006 02:27 GMT

> I have a stock 91 GT that failed the AZ emissions test today, the
> results are as follows: HC = 2.53 / 1.00 standard , CO = 14.76 / 12.00
> standard, and it passed the NOX test. Any tips on getting it to pass?
> My first reaction is to replace the cats, but as far as anything else I
> have no idea. Thanks for any help in advance.

Assuming that it's in good condition, start with the basics first. Give
it a good tune-up and try again.

Joe
Calypso Green '93 5.0 LX AOD hatch with a few goodies
Black '03 Dakota 5.9 R/T CC

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RJ - 05 Jan 2006 19:13 GMT

Take it for a run, you need a good warm engine before the test.
Rick

> > I have a stock 91 GT that failed the AZ emissions test today, the
> > results are as follows: HC = 2.53 / 1.00 standard , CO = 14.76 / 12.00
[quoted text clipped - 9 lines]
> Calypso Green '93 5.0 LX AOD hatch with a few goodies
> Black '03 Dakota 5.9 R/T CC

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Backyard Mechanic - 06 Jan 2006 23:14 GMT

High hydrocarbons... hmmm sounds like a short run grocery getter use
lately, not in real good tune. How much oil does it burn?

Tune up, Run engine warm blast it out with a good romp & run... change
oil, PCV valve and MAKE SURE screen under it is clean.

then romp it out for about 10 miles before going in to test.

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Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price
you pay..DEAL with it!

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