SMOG FAIL

I Have A 1995 Geo Prizm That Failed The Nox Portion Of Texas Emissions By 219ppm. I Was Told By A Mechanic It Has No Egr Valve Which Would...

Ive Done A Major Tune Up On My Bmw Changed All Sparkplugs, Ignition Coils, Oxygen Sensors, Mass Air Flow Meter, Radiator And Oil After...

Hi There, The Engine Light Was Not On, But I Pulled A Code And It Was Po404. What Should I Try Next? Thank You Robert

Hello, This Is My First Post In The Forum. I Have A 1997 Camry Xle (v6) With 140,000 Miles On It That Failed Its Smog Test Twice. Here...

I Have A 1995 Mazda 626 5spd, My Problem Is That I Went And Had A Smog Test Done And It Didn't Pass Emissions. Ive Changed Plugs, Plug...

Emission Test Showed Nox Of 1028, Limit Is 485 Co% Is 0. Hc Is 7. Mass Airflow Sensor And Coolant Temperature Sensor Replaced By Dealer...

2003 Lr Freelander. Purch Over A Month Ago And Ave Not Been Able To Pass Due To Ecu Codes P0171, -1471 And 1472. Does Anyone Know The...

Honda Civic 1995 1.6l Vitec 172k Miles First Time Failed Smog Marginally On Hc: 15mph 97/92 Ppm And 25 Mph 57/57 Ppm. Co Was Within Smog...

Engine Performance Problem 1994 Infiniti J30 I Have A 94 J30 That I Am Trying To Get Through Emissions Here In Az. I Failed The...

I Have A 95 Chevy Astro Van I Went To Get Emissions Done And Failed Just On The Low Hc. The Llimit Was 220 And I Had 454. I Just A Complete...