g4wam

Hi there,
failing on emissions is usually an MGF problem rather than a MGTF one since the TF has upstream and down stream O2 sensors.

But there are 2 possibilities
1. the cat is not genuine-this can make a difference, a used genuine one is a better choice.

2. this problem came up recently in the MG Owners mag --Charcoal canister faulty due to failed internal switch . This will fail an MOT on emissions

The switches aren't avialble separately but the whole canister is -the only way to obtain the switch part is to get a secondhanded canister.



Mike