SMOG FAIL

I Went To Take My Emissions Test Today And I Failed, On The Paper It States Trouble Code Po421, What Do I Need To Fix In Order To Pass...

Honda Recently Failed Emissions. First Test Failed Miserably. I Replaced Upstream O2, Pcv, Air Filter. Second Test Passed All But Co At Low...

I Am Interested In Buying This Truck From My Work, But The Problem Is It Wont Pass Smog The Engine Soon Light Is On And When I Took It Down...

My Honda 1990 Civic Lx 1.5 New Calitic Conv. New Ox Sen. Running Rich Wont Pass Smog Need Help What Do I Do Next? Whatsthe Prob.? Please...

I Have A 1997 Honda Odyssey, Took For A Smog Test And Check Engine Lite Was On. The Tech Said It Would Not Pass With Lite On. Checked The...

I Have A Mercedes Benz 500 Sec That Wont Pass Smog. I Took It To Get Smogged And The Person Told Me It Was Misfiring And To Change The Spark...

Hello I Took My Car To An Emission Test And It Fail Beacuse Of Two Codes Which The First One Is P1320: Manufacturer Controlled Ignition...

Engine Mechanical Problem 1991 Cadillac Seville V8 Wheel Drive Type Unknown Automatic 122700 Miles My Caddy Began Running Funny. I...

I Live In A County Where You Have To Have Emissions To Get A Tag And My Car Won't Pass Emissions Becuase Of Code 420 Which Is "catilist...

Engine Performance Problem 1997 Mercury Sable 6 Cyl Front Wheel Drive 136000 Miles I Have A 97 Mercury Sable Gs That Needs To Pass...