I'm trying to register my 1988 I-ROC in Colorado and I can not pass emissions. It's failing on three different parts;


1) HC GPM. The limit is 2.0000 & I showed 2.1657
2) Gas Cap Integrity. I just need to buy a new gas cap. Any suggestions?
3) Air Injection System Presence. I'm not even sure where I am looking for this at, and my search results showed very few answers to this.


From what I know, the previous owner put new headers, re-did the tranny, and did a new cat back exhaust. He also lived in Wyoming and didn't have emissions.


If anyone if able to help with finding the correct parts to get these repaired I would be so happy.

 

By air injection system presence, I assume yours is missing. If that's the case, you need to buy the original manifolds or smog legal headers like Hooker 2055's. Chances the air pump and plumbing are gone so buy them used. Gas caps are available everywhere, even Walmart so pay the $20 and that one is good. With the air system working, and a good fully warmed engine you will probably pass if not then it's tune up time.

 

I have a '92 z28 305 TPI that I am parting out. It still has the factory A.I.R system, manifolds, tubes, pump, etc.. It will be a couple of weeks until I get to pulling the drivetrain on it, but if you are still looking then, and want the ones from this car I will have them for sale.