Join Date: Feb 2007
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During my last MOT in Nortern Ireland on my diesel car its exhaust emmisions where not tested - I think they have ignored this aspect as in the past it had caused damage to engines. Yet officially they have a set procedure. They clearly state "It is important that vehicles are properly maintained (including changing of timing belts in accordance with the manufacturers' recommendation) and presented for test at normal working temperature." Maybe this is their get-out clause in the event of something going wrong.
See the link below which sets out the test procedure - quite helpful for those who have little or no knowledge of the test.
Currently in madnoel10's garage:
Honda Civic 1.4l