EMISSION

My 1998 P)lymouth Neon Is On 3 Cylinders When Idling And Has Engine Misfire And Is Only Running On 3 Cylinders. When Driving The Engine Is...

Truck Started Fine This Morning. Ran For 5 Or 10 Min, Then Started Missing Real Bad. It Will Restart, But Hardly Runs. It Just Kind Of...

It Passed Inspection Fine Here Where I Live But I Gave It To My Sister In Ohio. Emissions Failed. What All Do I Have To Change To Get It...

My 2001 F150 4.6 Had A Po402 Code For The Egr And I Have Replaced Everything Except Egr Valve, Idle Sucks, It Kinda Lopes And Sometimes...

I Have A 98 Saturn Sc1. Code Po 341 Keeps Coming Up. Before It Had A Code For Evap System To. Think It Was Po440 Or 441. Why Does It Get The...

My Car Is High In Nox And Already Reduced Everything Else Egr Was Bad And Changed It New One Didn't Work Neither After Warm Wount Hold...

Here Are The Before After Results: Both Passed, The After With Much Better Results. Before 8-23-10 Odometer 179,375 Miles...

What Causes Co% (max.63 Measured 1.57%) To Be Too High In Only The 25 Mph Test? Before This We Had To Replace The Egr Valve And Reset...

Yes To Your Queston About Egr System It Is Fine No Fluff In Either Port Even Fired It Up To Blow It Out Any Other Sugestions Thanks Herb

I Recently Took My 1994 740il For Smog Check And Failed The Test As Follows: It Shows Good Performance And Passed At 25 Mph But Failed At 15...