1991 GMC K2500 "car wont pass smog test" Questions

...used- same problem.no engine light comes on just goes from 300 to 1100 rpm in park levels off ocassionally. smog test wont pass in high or low rpm sounds like a vacuum leak check hoses and ...

...wont pass smog test I have a 30 day tag in order to get a smog done but when I went my check engine light came on and it wont pass the smog You will need to get it scanned and get the codes for the ...

...wont pass smog test change your oil and oil filter. Add a bottle of octane boost to the fuel tank then top off with fuel. Drive vehicle for about twenty minutes then have emissions tested. Unless you ...

...wont pass a smog test. Is their a general reason for this or should I just go try and smog it and see what happens? I guess thats what I gotta do anyway, but if it doesn't pass what do you think the ...

...wont pass virginia state inspection my truck wont pass va state inspection because i put a older 350 in it that didnt have any smog stuff on it now in the county i live in they dont have smog testing ...

wont pass this year. i havent made any pods to the car except bigger rims&tires. the shop who did the test said my car is a gross polluter now. how can this be? REPLACE OXIGEN SENSOR AND CHECK GAS

94 honda accord wont pass smog test, Took car in for smog test and it fail So what failed ?

...WONT WORK, ANY suggestions If it was originally intended for Texas, it's probably been made as a 49-state-compliant vehicle (CA has stricter emissions). To pass in CA, you may need some new parts for ...

...wont read???? getting very frustrated at this point - ready to sell this car!. how many miles is it gonna take?? am I not driving it correctly?? is there something else going on??? How many miles ...

wont pass a smog test..was told when I changed the battery it messed up the computer and I need to reset the computer. How do I do this? Only service station can reset.If your check engine light is on