my 2000 172 had an MOT today.
Passed fast idle (4000 rpm) emissions test
failed on natural idle. high CO
Anyone have any suggestions?
i can start changing spark plugs, lambda sensor, cat, etc but i'd rather have opinions first
it has a 4month old prospeed cat back exhaust - has anyone with a prospeed struggled on emissions tests?
Passed fast idle (4000 rpm) emissions test
failed on natural idle. high CO
Anyone have any suggestions?
i can start changing spark plugs, lambda sensor, cat, etc but i'd rather have opinions first
it has a 4month old prospeed cat back exhaust - has anyone with a prospeed struggled on emissions tests?
