cat question
Thread Starter
Instructor
Joined: Jun 2003
Posts: 200
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From: Tempe AZ
cat question
Is it possible to pass emissions if you remove the cat and stick a pipe in there? I live in Phoenix, and emissions don't seem that terrible here. Also, since I have no cover for my coil, got it wet one day. Car ran like poo and shortly after died, which I suppose is normal for a wet ignition system. What I noticed though, is that when I tried starting it (a couple sparks every now and then, even started for 3 or 4 seconds), black smoke was pouring out the side of my cat. I assume this is unburned fuel being sent through it. Is it safe to assume that my cat is dead?
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
Re: cat question (Corvettaholic)
Three years ago I had my '88 inspected there and I believe Gilbert used a dyno smog test so I wouldn't try to pass it without a main cat.
You can gut or remove the two pre-cats but replace the suspected main cat with a Catco from Summit. They are not much $$ and will assure that you pass smog.
Since your engine is still missing I suspect there are other issues to be attended before you can pass emissions testing.
To check out the condition of your O2 sensor use the diagnostic method described on my site (link in my sig below).
You can gut or remove the two pre-cats but replace the suspected main cat with a Catco from Summit. They are not much $$ and will assure that you pass smog.
Since your engine is still missing I suspect there are other issues to be attended before you can pass emissions testing.
To check out the condition of your O2 sensor use the diagnostic method described on my site (link in my sig below).
