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Old 01-04-2006, 18:01   #1 (permalink)
915.0Hatch
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Failed AZ emissions

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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Old 01-04-2006, 19:01   #2 (permalink)
Joe
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Re: Failed AZ emissions

"915.0Hatch" <asukorn66@gmail.com> wrote in
news:1136424538.272343.199860@g49g2000cwa.googlegroups.com:

> 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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Old 01-05-2006, 12:01   #3 (permalink)
RJ
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Re: Failed AZ emissions

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

"Joe" <nobody@home.now> wrote in message
news:Xns9741DAA69D907nospamforme@216.77.188.18...
> "915.0Hatch" <asukorn66@gmail.com> wrote in
> news:1136424538.272343.199860@g49g2000cwa.googlegroups.com:
>
> > 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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Old 01-06-2006, 16:01   #4 (permalink)
Backyard Mechanic
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Posts: n/a
Re: Failed AZ emissions

"915.0Hatch" <asukorn66@gmail.com> wrote:

> 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.
>


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.


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