Rather dirty emissions

[iani]

I popped over to the TSSC International and decided to have the Stag tuned whilst I was there as it's almost MOT time. Initially my CO reading was 9.6% with an HC reading of around 1460, needless to say it took a fair bit of fettling to bring those down, ended up with a CO of 2.9 & HC of c.290, now have a bit of a low end flat spot but if it gets past the tester I can enrichen the mix a bit. Worst part was finding out that I've got almost no manual advance, will try replacing the springs if I can get them, else it's a replacement Dizzy I suppose.

Ian

[GDPR]

imported post

Sounds like your jets and needles are worn, and the needles need to drop too low into the jets to get the idle mixture correct, giving you a weak mixture off idle....

[iani]

imported post

kryten wrote:

Sounds like your jets and needles are worn, and the needles need to drop too low into the jets to get the idle mixture correct, giving you a weak mixture off idle....

Thanks Kryten, more parts required then.

Ian

[Ferds]

imported post

I'd be inclined to get a 'second reading / opinion'. Did your car pass the MOT last year without any issues with the emissions?

Kind Regards

Chris

[iani]

imported post

Ferds wrote:

I'd be inclined to get a 'second reading / opinion'. Did your car pass the MOT last year without any issues with the emissions?

Kind Regards

Chris

I didn't own it then Chris, I've only had it since December so I don't know what went on last MOT time.

Ian