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» Northern California Ford Owners     » Automotive   » Tech Talk   » Smog Test

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Author Topic: Smog Test
1990Silver5.0
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I need help finding a "Don't Pass Don't Pay smog Center." I purchased my 90 5.0 back in June. the guy I got it from smogged it the same day i got it but it didn't pass (emissions). I changed the back exhaust not the front. I took off the cherry bombs that where on there and put flowmasters on. Alot of dirt started falling out of the cherry bomb pipes. Do you think the cherry bomb pipes could have stop it from passing smog?

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1995 Impala SS
1992 GT Convert. 5.0 auto -sold-
1990 Lx Convert. 5.0(parted)
1992 Lx Hatchback 5.0-sold-:)
1990 5.0 Notchback -SOLD-:(

Posts: 732 | From: Vallejo | Registered: Nov 2005  |  :
two-gun kid2
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do you have the stock h pipe with 4 cats on it?
what part of the test did it not pass?

Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005  |  :
Blind
2.3L
CAFords OG
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quote:
Originally posted by 1990Silver5.0:
I need help finding a "Don't Pass Don't Pay smog Center." I purchased my 90 5.0 back in June. the guy I got it from smogged it the same day i got it but it didn't pass (emissions). I changed the back exhaust not the front. I took off the cherry bombs that where on there and put flowmasters on. Alot of dirt started falling out of the cherry bomb pipes. Do you think the cherry bomb pipes could have stop it from passing smog?

mufflers have absolutely nothing to do with smog

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  :
1990Silver5.0
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yes it has the 4 catted h-pipe. I also have another 4 catted h-pipe that came off a 86 gt. Do you think i should pay fot it to get put on or just try to see if it will pass. The guy at the smog shop said that i need 2 cats but some1 told me that it could have been the old pipes that i took off. Help please

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1995 Impala SS
1992 GT Convert. 5.0 auto -sold-
1990 Lx Convert. 5.0(parted)
1992 Lx Hatchback 5.0-sold-:)
1990 5.0 Notchback -SOLD-:(

Posts: 732 | From: Vallejo | Registered: Nov 2005  |  :
1FAST89GT
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put the other catted h-pipe on and get it up to operating temp. then take to a smog shop and let it run till they test it. there are no pass or don't pay shops in vallejo that i know of
Posts: 4915 | From: VALLEJO | Registered: May 2004  |  :
1990Silver5.0
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alright. Thanks alot every. I will try that and go on from there. Is there any in the vallejo that will put my h pipes on cheaper then the shop would

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1995 Impala SS
1992 GT Convert. 5.0 auto -sold-
1990 Lx Convert. 5.0(parted)
1992 Lx Hatchback 5.0-sold-:)
1990 5.0 Notchback -SOLD-:(

Posts: 732 | From: Vallejo | Registered: Nov 2005  |  :
1FAST89GT
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quote:
Originally posted by 1990Silver5.0:
alright. Thanks alot every. I will try that and go on from there. Is there any in the vallejo that will put my h pipes on cheaper then the shop would

pm me your #
Posts: 4915 | From: VALLEJO | Registered: May 2004  |  :
92stangLX
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You sould post your test results. That would help to diagnose where your problem really is. All of the smog people that I have dealt wiht don't know shit when it comes to telling your what is wrong. When mine failed they said change all four cats AND my EGR. I changed my EGR (but not cats) and it passed.

I would check your EGR valve and make sure it is working properly. If you need to replace something this will be cheaper than a set of cats.

Posts: 5302 | From: San Francisco | Registered: Sep 2003  |  :
PWR HNGRY 302
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Its not that hard to swap out your H-pipe you could do it yourself in about an 1 hour if its your first time. All you have to do is unblot the mufflers,unscrew and disconnect the o2 sensors,unbolt the H-pipe from the headers and your done.

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87 Fox- Restoration in progress
2014 Tacoma DCLB MGM
2017 Prius Prime (The Daily)

Posts: 2655 | From: SF Bay Area | Registered: Sep 2005  |  :
1990Silver5.0
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Thanks every1 for you help. I will try and do it myself today if not I will give you my number 1FAST89GT.

Thank you again

Posts: 732 | From: Vallejo | Registered: Nov 2005  |  :
1990Silver5.0
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Thanks everyone. I put my other 4 catted h-pipe on yesterday. Took longer then i thought but the I got the job done. I took it to the get it smog today and it passed. So if anybody needs it to pass smog come get it.

Thanks to everyone again

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1995 Impala SS
1992 GT Convert. 5.0 auto -sold-
1990 Lx Convert. 5.0(parted)
1992 Lx Hatchback 5.0-sold-:)
1990 5.0 Notchback -SOLD-:(

Posts: 732 | From: Vallejo | Registered: Nov 2005  |  :


 
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