EMERGENCY, FAILED EMISSIONS AND NEED ADVICE
Thread Starter
Cruising
Joined: Feb 2002
Posts: 14
Likes: 0
From: napervile il
EMERGENCY, FAILED EMISSIONS AND NEED ADVICE
I did my emissions testing the other day and I failed. The reason I failed is because the previous owner of my car for some reason or another gutted the passenger side cat. I need some cost effective ideas for passing. I am on a tight budget. I am good with welding so if there is another cat I could pull from a junk yard and weld up I would more then appreciate the info. thanks.
Safety Car
Joined: Jun 1999
Posts: 3,641
Likes: 2
From: Southern California
Re: EMERGENCY, FAILED EMISSIONS AND NEED ADVICE (allchevy95)
How badly did it fail?
The cheapest thing you can do is a bribe.
If you don't want to go that route run some racing fuel in your tank.
Or you can buy a bullet cat for $80. Summit Racing has some and so does Car Sound. They are very small cats.
Some here on the forum have passed smog tests with no cats. I want to know the trick. :D
The cheapest thing you can do is a bribe.
If you don't want to go that route run some racing fuel in your tank.
Or you can buy a bullet cat for $80. Summit Racing has some and so does Car Sound. They are very small cats.
Some here on the forum have passed smog tests with no cats. I want to know the trick. :D
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: EMERGENCY, FAILED EMISSIONS AND NEED ADVICE (allchevy95)
You'll definately need a cat to pass IM240 (the roller test). Why don't you give Vette2Vette a call? They have used cats from salvaged Vettes and they're only about 30 mins from Naperville.
815 287 9878
If the test is just an idle speed sniffer, you can pass without cats. If the test is on the rollers (IM240) you'll never pass without cats.
Eric
815 287 9878
Some here on the forum have passed smog tests with no cats. I want to know the trick.
Eric
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: EMERGENCY, FAILED EMISSIONS AND NEED ADVICE (Raysur)
The cheapest thing you can do is a bribe.
Melting Slicks
Joined: Jan 2002
Posts: 2,784
Likes: 3
From: Atlanta GA
Re: EMERGENCY, FAILED EMISSIONS AND NEED ADVICE (Nathan Plemons)
Well.... wat failed? It might not be the cat.... What was over the limit.... Hydrocarbons?..... Nox???.... If you can tell me what was over, i could help you out a little more.... There are a lot of little tricks to get a car through....
Le Mans Master
Joined: Mar 1999
Posts: 9,663
Likes: 1,682
From: Fort Worth Texas
2024 Corvette of the Year Finalist - Unmodified
2023 C8 of the Year Winner - Unmodified
2020 Corvette of the Year Finalist (stock)
2019 C7 of Year Winner (stock)
Former Moderator
Cruise-In I-II-III Veteran
Re: EMERGENCY, FAILED EMISSIONS AND NEED ADVICE (StealDads67)
Well.... wat failed? It might not be the cat.... What was over the limit.... Hydrocarbons?..... Nox???.... If you can tell me what was over, i could help you out a little more.... There are a lot of little tricks to get a car through....
Melting Slicks
Joined: Jan 2002
Posts: 2,784
Likes: 3
From: Atlanta GA
Re: EMERGENCY, FAILED EMISSIONS AND NEED ADVICE (Marcho Polo)
The way to figure if the Cat is causeing the problems You have to see the chart, If the HC and the CO are peaking at the same time, it the cat, they should be peakin at opposite times....
NoX... Is produced from the cylinder wall temps being to high... You need to find a way to cool down the car...
Couple tricks are.... to boost fuel pressure, Take the vacuum hose off the Fuel pressure regulator... But doing this will bring up the HC and CO levels.... make sure you have enough head room to do this.... This should help... If that doesnt work try Water squirt into the intake, or put a block of dry Ice on the Air Filter
Hope this helps, it should def get you through, Nox are easy to get down
NoX... Is produced from the cylinder wall temps being to high... You need to find a way to cool down the car...
Couple tricks are.... to boost fuel pressure, Take the vacuum hose off the Fuel pressure regulator... But doing this will bring up the HC and CO levels.... make sure you have enough head room to do this.... This should help... If that doesnt work try Water squirt into the intake, or put a block of dry Ice on the Air Filter
Hope this helps, it should def get you through, Nox are easy to get down
