need some smog info help
Thread Starter
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
need some smog info help
Alright here goes. Didn't pass ca. smog, all ok except the NO, max allowed 533 ppm measured 1151 ppm. what would cause this and how do i correct it. i'm thinking that high has to be the cat. Any ideas? 
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
That was my problem,as well...EGR on the 78....
The cat would restrict power and you would notice that...if you change it,install a 3" high flow cat..carb approved here...got mine at Ed Hansen's...
Rich
Edit..run premium and make sure that cat is hot before going into that sniffer station....
Last edited by rihwoods; Jan 10, 2006 at 09:58 PM.
Thread Starter
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
Thanks For The Help
Originally Posted by rihwoods
That was my problem,as well...EGR on the 78....The cat would restrict power and you would notice that...if you change it,install a 3" high flow cat..carb approved here...got mine at Ed Hansen's...
Rich
Edit..run premium and make sure that cat is hot before going into that sniffer station....
Thanks much,guys
Rich
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
Originally Posted by 73 red vette
Thanks for the help Rich and Tony as well, I thought it might be the cat but I think you guys are right from what I can find on the web.
Thanks much,guys
Rich
Thanks much,guys
Rich
Rich
Thread Starter
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
Originally Posted by rihwoods
TIP:When these EGR's don't hold a good seal(vacuum) they cause high NO....what happens is crap gets on the metal seal area..sometimes you can clean the seal ring and cure it..if it ain't burnt or cracked...I fixed one on my Trooper recently..but you are better off with a new one...
Rich
Rich
got the egr Wed. thinking about a new oxygen sensor also since they are used in sync. BTW, this is my 94 ranger with 138,000 miles that i'm talking about. Never had a smog problem with it before, guess the high miles sent up a red flag.
thanks for the help
Rich
Race Director
Joined: Feb 2005
Posts: 16,100
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Originally Posted by 73 red vette
Rich
got the egr Wed. thinking about a new oxygen sensor also since they are used in sync. BTW, this is my 94 ranger with 138,000 miles that i'm talking about. Never had a smog problem with it before, guess the high miles sent up a red flag.
thanks for the help
Rich
got the egr Wed. thinking about a new oxygen sensor also since they are used in sync. BTW, this is my 94 ranger with 138,000 miles that i'm talking about. Never had a smog problem with it before, guess the high miles sent up a red flag.
thanks for the help
Rich
Rich
Thread Starter
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
Originally Posted by rihwoods
Oh..thought we were talking about your 78 vette....Ford ?....yeah,change ox sensor and check that your manifold/exhaust bolts are tight...no leaks...also,check your gas cap..that alone can cause your "check engine" light to come during test...I know all about that one...I failed because of a $11 gas cap on my Trooper...pita..
Rich
Rich
MAN, I HATE SMOG CRAP
RICH
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From: San Diego - Deep Within The State of CONFUSION!
Originally Posted by 73 red vette
Alright here goes. Didn't pass ca. smog, all ok except the NO, max allowed 533 ppm measured 1151 ppm. what would cause this and how do i correct it. i'm thinking that high has to be the cat. Any ideas?
Race Director
Joined: Feb 2005
Posts: 16,100
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Originally Posted by SanDiegoPaul
Arruh? We talkin' your' 73 red vette here? No cats on that! And why are they smogging it?
I thought he was talking about his 78 SA at first...he has two vettes...
