Please help me pass emissions.
#1
Dark Side
Thread Starter
Please help me pass emissions.
All right to make a long story short. I had my car taken apart because I was replacing the clutch, so I decided to gut the precat(big mistake). Now I have to pass emissions and I'm failing by .15 on the hydrocarbons. I don't understand I passed with flying colors last time, I didn't think the precat played that big of a roll. I just replaced the spark plugs. It has newer wires, o2, fuel filter, air filter, oil. Is there anything I for getting? I don't want to have to redo the exhaust right now because I have other plans for it.
It's a 1990 GXL, and I live in nw indiana.
It's a 1990 GXL, and I live in nw indiana.
#3
Rotary $ > AMG $
iTrader: (7)
You are going to need either a new precat or replace the oem cat with aftermarket cat. If indiana does a strict visual, you will need to go the oem route.
Here is a thread with my experience passing emissions in in Texas. We have no visual inspection.
Autozone part number for the cat I used is #38734.
Good luck.
Here is a thread with my experience passing emissions in in Texas. We have no visual inspection.
Autozone part number for the cat I used is #38734.
Good luck.
#4
Dark Side
Thread Starter
I don't think they are very strict on the visual inspection. They just pop a mirror under there to make sure u have a cat.
You guys really think I need to replace the cat to pass? I'm so close though. The limit is 1.40 I went 1.55.
You guys really think I need to replace the cat to pass? I'm so close though. The limit is 1.40 I went 1.55.
#6
Rotary $ > AMG $
iTrader: (7)
Originally Posted by jackhild59
Here is a thread with my experience passing emissions in in Texas.
Good luck.
Here is the link, complete with copies of my emmission testing sequence. I tried the alcohol trick airpump trick. If you are that close, you could try the alcohol trick. Buy a gallon of alcohol at Home Depot and mix it in the last couple of gallons of fuel in the tank. It reduced my emissions by 30%, but that wasn't enough for me.
Problem I see with your precat missing long term is that the main cat is probably designed for the pre to do a little of the work, especially on cold startups. I do not believe that the main cat will long survive without the precat. This is also why most aftermarket cats have a limited life as well.
Good luck
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