UGH after spending over 100bucks on testing alone and about 200 on repairs i still havent passed emissions! Ive replaced my plugs, corrected my idle,timing, put back my cat, checked for vac leaks and used some of that "guarenteed to pass" stuff and iim still failing! What could still be wrong with my car? Ive even tried the alch trick and that hasnt worked at all. Im getting a better idle but the car still has a rich smell to it. Im pretty sure my varable resistor is messed up because it will keep on turning andturning and turning with no help.
any help would be great
thanks

 

when you own a 7, you need hookups or your not going to get anywhere

 

Turning that screw isnt going to do anything.. You need to read the section in the FSM about setting your idle mixture. Did you jumper the ISC before you started twiddling with that screw?

Also, post your numbers. That gives us a better indication of what is going on.

 

****, i spent a little money on my car to get it to pass, and my 'score' on HC's was 1250 and the limit was 200!!

 

Idle? Cruise?

 

HC reading 227 allowable 174 thats the 25/25 test
the HC reading 279 allowaable 180 thats the 50/15 test

 

I passed it just yesterday even though my cats were almost completely shot, the reason: I have a small vacuum leak that is causing me to run lean...so my best suggestion is to create a small vacuum leak and you should be able to pass the test.

 

how did you fail the smog test? was it because of gross polluter? my 88' GTU had that problem and i ended up just changing the cataylic converters and my car passed with flying colors. hope this helps you. -fox

 

If you have your cat on, and your air pump and air control valve is working, you should pass. If your not passing all I can think of is that your cat is dead.

 

thats what i speculated. he said it was a high performance cat. but it was spewing soo much black **** out and i dont think its still in there. you bastard, im the one who fixed your timing. o well. its cool. but yeah put a bonez cat on there, or ill give you my exhaust when i get my new one. peace.

 

if the variable resistor keeps turning then it is broken, i would toss in a junkyard one and set it according to the FSM procedures, it does affect emissions at idle.

 

And thats the ONLY thing it affects... IDLE!!

 

is the variable resistor the lil screw that turns wiht a flathead and has a gray rubber cap over it?