Why did my Mot fail due to high co?
IIRC the factory default cats are around 400 Cell so there is a potential for the cats to let more emissions through. Just doing a little research in an attempt to understand why/how the CO is high… The MOT tester has access to a DOT database or emissions handbook, which lists the CO and HC limits for each make and model of vehicle.
Why did my car fail the MOT test?
The car has failed it’s MOT on just the CO (carbon monoxide) output. Everything else was OK. The limit set by the MOT Tester was 0.3%, the actual emissions on 2 Fast Idle and 1 Normal Idle test runs were 0.44, 0.44, & 0.45 respectively. The engine was warm during testing.
What was the MOT limit on my car?
The limit set by the MOT Tester was 0.3%, the actual emissions on 2 Fast Idle and 1 Normal Idle test runs were 0.44, 0.44, & 0.45 respectively. The engine was warm during testing. It also had Tesco 99RON fuel in so it should have been burning optimally. I have new O2 sensors, exhaust system and 200 Cell Cats.
Is the 0.3% Mot setting OK?
The MOT tester has access to a DOT database or emissions handbook, which lists the CO and HC limits for each make and model of vehicle. I doubt very much that he looked up the DOT values for this car so I assume he used some ‘default’ setting. 1st Q, is the 0.3% setting OK?
IIRC the factory default cats are around 400 Cell so there is a potential for the cats to let more emissions through. Just doing a little research in an attempt to understand why/how the CO is high… The MOT tester has access to a DOT database or emissions handbook, which lists the CO and HC limits for each make and model of vehicle.
The car has failed it’s MOT on just the CO (carbon monoxide) output. Everything else was OK. The limit set by the MOT Tester was 0.3%, the actual emissions on 2 Fast Idle and 1 Normal Idle test runs were 0.44, 0.44, & 0.45 respectively. The engine was warm during testing.
The limit set by the MOT Tester was 0.3%, the actual emissions on 2 Fast Idle and 1 Normal Idle test runs were 0.44, 0.44, & 0.45 respectively. The engine was warm during testing. It also had Tesco 99RON fuel in so it should have been burning optimally. I have new O2 sensors, exhaust system and 200 Cell Cats.
The MOT tester has access to a DOT database or emissions handbook, which lists the CO and HC limits for each make and model of vehicle. I doubt very much that he looked up the DOT values for this car so I assume he used some ‘default’ setting. 1st Q, is the 0.3% setting OK?