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Zino986 · 08-31-2014, 04:18 AM

Hi,
My 1998 Boxster 2.5 has failed the emissions part of the UK MOT test, but it was listed on the emissions report as a 2.7
Question is, would this make a difference to the parameters that it should be within?
The only thing it failed on is the CO reading (approx. 1.4%), the expected result max was 0.20%
It has a single O2 sensor, so I cant, (or don't know how to) check the operation of the cat.
Can anyone point me in the right direction?

By-the-way, it is used daily 50mls, not garaged, and have also used cataclean and 97ron fuel before the test.

Thanks in advance

08-31-2014, 04:18 AM	#1
Zino986 Registered User Join Date: Aug 2014 Location: Kent Posts: 3	UK MOT Emissions Failure Hi, My 1998 Boxster 2.5 has failed the emissions part of the UK MOT test, but it was listed on the emissions report as a 2.7 Question is, would this make a difference to the parameters that it should be within? The only thing it failed on is the CO reading (approx. 1.4%), the expected result max was 0.20% It has a single O2 sensor, so I cant, (or don't know how to) check the operation of the cat. Can anyone point me in the right direction? By-the-way, it is used daily 50mls, not garaged, and have also used cataclean and 97ron fuel before the test. Thanks in advance