MOT Failed- Emissions

[01smiffy]

Sorry guys

Car failed MOT on CO Emmissions! i have not done anything since last MOT which passed no problems!
I have a rev3 turbo with no Cat

The CO readings are 2nd fast ideal test 0.520 & should be no more than 0.300!

gargage reckons is the Lambda senser?

Any advise would be great!

[Ian Geary]

so you're sure you are being tested against the non cat emission level, rather than the with cat level?

it depends on your car's age though - around 1995 was the cut off year at which turbos had to be measured against the more strict with cat levels.

cheap tings to do to try and reduce emissions:

- get the mot done when the car is hot
- stick a new air filter in
- clean or replace the plugs
- run redex through the tank
- spray carb cleaner into the trottle body

These worked for me with my old VW...but they're intuituve enough.

you could try re-directing the crank breather to atmosphere, but this itself is an MOT fail.

expensive things to do

- replace the lamba sensor
- fuel injector cleaning etc

hth

Ian

[jim55]

add an oil change and a new filter to the list .i had this last week for mot,i changed the oil ,new fresh petrol and air filter took it out for a right good blast (and really work the engine to get any deposits blown out)passed no prob

[Matt_Cooper]

My Rev 3 N/A cleared the emissions even without a cat.

[raptor95GTS]

plenty of threads about this issue but without a reg letter advice is muted. M plate or older do Non CAT test, read the sticky at the top for further info

http://www.imoc.co.uk/forums/viewtopic.php?t=43072