SMOG

This Car Passes Emissions Testing Regularly But Co Levels Have Been Elevated To 2/3 Of The Limit For Many Km (approx. 60k Miles). I Bought...

Recently Failed The Emissions Test Only On The N0x. Readings Were 5.2171 Limits Were 4.0000. Hc Was 1.8484 Limits 2.0000 So Its Running A...

Engine Mechanical Problem 1984 Isuzu Truck 4 Cyl Two Wheel Drive Manual My Pu Passes All But The 15 Mph No Witch Are 300 To High What...

1999 Dodge Dakota 6 Cyl Automatic 176618 Miles My No Reading Was Too High At 15mph And Close To Too High At 25mph( 15mph Max 512...

When I Start Her, She Will Start No Problem, Then She Starts Shaking. I Will Drive It Right Away, But The Minute That She Gets Up To...

Hello, My Bmw M3 Has High Hc (hydrocarbons) At 15mph Measured 98 And The Max Is 51, 25mph Measured 77 And The Max Is 35. I Have...

My Engine Light Came On And It Had A Diognostic Done And It Showed Up Saying Catalyc Wearing, I Took My Car In Last Yr And Im Sure They Did...

So Here's The Problem My Car Is Having Trouble Passing Ca Smog Test. I Have Taken The Car To Two Different Mechanics And They Can't Figure...

I Just Took My Vehicle In For An Emissions Test To Get Plates For It. It Failed. Due To The "exhaust Emissions Readings". The Hydrocarbon...

My Computer Is Not Developing Codes For Emission Testing Required In Az. Obd Ii Process. Cats Replaced By Gm 21,000 Miles Ago. It Is...