I have a 1989 Jeep Wrangler with a 6 cylinder engine. It has a carburator. I failed my smog test.

At 15mph and 1585rpm the NO was 2004 and failed as a gross polluter, but at 25mph and 2426rpm the NO measured 614 and passed. It seems to me that if the technician had run the higher rpm at 15mph I might have passed. What do you think?


Answer:		You want to check the EGR valve system as well as the CO levels. A faulty EGR valve will cause high NO, and can cause low CO emissions. posted by SmogTips Support

Related questions and answers you might find useful:

1997 GMC SAVANA VAN lowest cost station. by Mary

1997 GMC SAVANA VAN by Mary

How do I pass the emissions test being that my car had work done last week and it's not registering by Quinndellia

Because my car had memory loss due to a battery being a change of what do I need to do to pass the vehicle test by Quinndellia

I store USDT in my wallet on OKX and have my seed phrase (clean party soccer advance audit clean evil finish tonight involve whip action). What is the process to send my USDT to Binance? by Skye