Carb adjustment question

[Ant-t]

I've recently rebuilt my pierburg 2e3 which has made my van run alot better and solved a random stalling issue that I had due to the amount of crud in the float bowl and jets.

I've set my co2 screw to factory at 3.5 turns, my question is does directly effect the emissions reading on an mot?

[itchyfeet]

yes

thats why they call it a co screw

co is only measured on idle.

[Ant-t]

Ah, yes thank you for confirming what I should have figured out in the first place