91tt fails emission test. It fail at Idle " hc ppm " to high and "CO" to high.
2500 rpm is fine. I replaced Plugs,air filter,pcv val,changed oil. Car appears to run fine, I took it on a long drive before testing to make sure it was warm. I've only had the car for a few months. In Colorado Springs you need to have a emission test before you can get tags. Not sure what to check next .

Thanks Marvin

 

https://www.zdriver.com/forum/showth...highlight=smog
Read this.

High HC's and high CO is a sign of a rich condition; which is too much fuel. I had/have the opposite problem. What kind of plugs did you use? Could be O2 sensors or catalytic converters. What mods do you have? Has the ECU thrown and codes? Do resistance tests on your coil packs and injectors too to make sure they're all operating correctly. Try cleaning your throttle bodies as well.

 

Thanks for the help. I put NGK standard plugs in. I will need to check the other things you talked about. Thanks Again

 

Check your timing too. 13-17 degrees BTDC. Car should have more power at 17.


I can't remember if it says in the link I directed you too, but you could run 87 octane through it; which should improve your test results. The car won't run very well and you won't want to drive it hard until all of the 87 is burned out of the tank, but it may be worth a shot if nothing else works.

 

Here in NJ we use a 100 dollar bill...

 

Sounds like people from NJ also have smart mouths. Why do you insist on posting crap when someone is trying to help another guy?

I should have said, People from NJ have a good humor. I was being a Ahole.

 

i think he was making a joke.

 

Your right Rizz...I was jumping the gun. It's not been a good week.

Sorry LUKassZ...Didn't mean to come on to you so hard. I owe you one.

 

Awwww is Zgringo gonna cry?

 

U guy's make me laugh. lol

 

You need a woman...you keep playing with yourself you'll go blind...and be careful on your bike or you'll never reach puberity.
I'd hate to see my hero, my idol have anything happen to him.

 

actually there was NO joking in my post!!! With NO egr, downpipes and testpipes, I couldn't pass emmisions if I tried. Seriously we have to find the right inspector and pay him! Usually 100 bucks covers it...

 

That helps.