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MOT and emissions
philhoward - 7/6/09 at 07:45 AM

I have my MOT next week and I cannot get my co2 reading below 5-6%. I am running a 2lt Pinto and bike carbs.
Is there anyway round this so that I can pass OK. (ie bribe the examiner!!!)

I plan to put in on a rolling road to get it set up properly around the end of August time after my new engine has been run in, but I need it on the road so that I can do the miles

philw - 7/6/09 at 07:49 AM

When was the car built? is it on an age related plate?

Hellfire - 7/6/09 at 07:57 AM

Are you on a Q plate? Does your V5C have emissions stated?

In any case, I wouldn't worry about it. Just take it for MOT and if it should fail on emissions, then fix it.

Phil

smart51 - 7/6/09 at 07:59 AM

Take your car round to a friendly MOT garage and put it on their gas analyser. Turn the mixture screws down on each carb to lean the idle mixture out a bit until the CO comes down to a respectable level.

The idle mixture won't affect full throttle fuelling so don't worry about it.

philhoward - 7/6/09 at 08:52 AM

Its on a F plate so needs to meet 3.5% co. I have a gunsons co tester and have fully closed the mixture screws and it still runs at 5-6%

Any suggestions?

madteg - 7/6/09 at 09:33 AM

If its ticking over to fast you could be running on the main jets that is why the idle screws are not working.

philhoward - 7/6/09 at 10:01 AM

It ticks over at 1000rpm because it has a lumpy can in it. I will try turning the tickover down and see what happens

NS Dev - 7/6/09 at 10:06 AM

why do people go for age related plates not Q??

I deliberately went for a Q to avoid this carp

MikeRJ - 7/6/09 at 10:26 AM

quote:
Originally posted by NS Dev
why do people go for age related plates not Q??

I deliberately went for a Q to avoid this carp


I totally agree, save a lot of hassle for the sake of a registration number.

BenB - 7/6/09 at 10:33 AM

Except the donkeys at DVLA put emission limits from SVA on my Q plate V5.... Not sure what the MOT computer has on it though....

clairetoo - 7/6/09 at 10:49 AM

quote:
Originally posted by NS Dev
why do people go for age related plates not Q??

I deliberately went for a Q to avoid this carp

Odd thing is mine's on a `T` and hasnt had an emission check at the last two MOT's - or a brake test

jpindy3 - 7/6/09 at 10:57 AM

mate,for my iva i was in the 3.5% class,and when he tested it it didnt even read 1% at idle of corse,what carbs are thay,i would have a look at the dyaframs and have a look at the floots,
i hope you sort it,but that is very high for that set up.good luck