Help Needed Regarding Failed MOT on Emissions, 3.2 Carrera

[monty37]

Hi All

I have taken my 1989 3.2 Carrera for a MOT and it has failed on emissions (Exhaust emissions carbon monoxide content excessive (7.3.B.1a)

As this is my first Porsche can anyone advise me on this matter, is this a common problem and the best way to fix,

Many Thanks

Mo

[RSVP911]

monty37 said:

Hi All

I have taken my 1989 3.2 Carrera for a MOT and it has failed on emissions (Exhaust emissions carbon monoxide content excessive (7.3.B.1a)

As this is my first Porsche can anyone advise me on this matter, is this a common problem and the best way to fix,

Many Thanks

Mo

I had the same issue on a 1973 2.7 RS - made the mistake of not warning it up and it arrived cold at the MOT centre about 1/2 a mile from start up.

I argued with the centre - we agreed to differ and I re booked it in elsewhere (1/2 an hour away) and it passed fine and has done last 3 times - not sure if this maybe your problem ?

Good luck

Edited by RSVP911 on Sunday 23 July 19:56

[ras62]

It has failed on a high Carbon monoxide reading. To pass the reading needs to be <=3.5%. What was your reading?

[monty37]

Hi, the garage never let me know the reading, they had just told me it failed on emissions, I will find out, the car is still in the garage as the car had been left with them and the MOT had been done on Saturday.

[ras62]

The reading should recorded on the test form iirc. If they've done the test cold as rsvp has said then they are playing games maybe looking to make a few quid on faultfinding and fixing an 'imaginary' vacum leak, retest etc ...

[monty37]

Cheers for your advice, I will run the engine for a bit and then ask the garage to re-test the emissions.

Many Thanks

Mo

[Caddyshack]

Yes, get it chuffing hot with a good thrash and it should pass, if not you could take it to a specialist and ask them to make sure it is running fine and get them to take it to their friendly MOT station...it is amazing how it will then pass.

[Pickled Piper]

I echo what the others have advised. It needs an "Italian tune up" just prior to the MOT. This should not be a gentle pootle on the way to the testing station. You need to get it hot then run it good and hard. Red line it in each gear etc.

pp