hey guys..

after new 02's, plugs, wires, air filter, and a solid running truck.. I failed emissions again this morning... I triple checked vaccuum leaks as well..

heres the deal... legal limit for CO is 1.29-ish... I WAS AT 7.89!!!! Literally everything else is new on the truck, even a rebuild 8k miles ago...

I have a new cat converter in the garage.. Guess I should throw that on too?? WOuld the cat take it from 7.89 to 1.29?

thanks in advance
Neal

 

did you ck you egr valve? the small sense line can get clogged with carbon and the egr will not operate properly

 

EGR shouldn't cause high HC or CO. A new converter might bring it down to spec.