co2 high

[325_track_day]

cars just failed mot on a no of things was goona tackle most my self but before the welder comes out how adjustable is co2 is this an indication of a worn engine has done 200k and gets hard track use do i ned to tackle this before anythinmg else gets done also read mt inner sills post lol help

[E30Adam]

It's an indication that your idle mixture needs adjusting mate.

Should be a screw on the AFM if it's an M20

[Ant]

Check the air filters not minging too dude.

plug gaps affect the emits also.

the ajuster screw on the AFM should be viewed as a last resort TBH if its that high.

How bad we talking ??

[325_track_day]

u know im not sure they didnt attch the print out to the fail sheet brilll eh

[E30Adam]

u know im not sure they didnt attch the print out to the fail sheet brilll eh

I'd be asking for a copy of that!!!

[325_track_day]

apparently its about 550 does that mean anything lol my local garage are so helpful

[RAYMOND]

depends how bad the cO is . the best way to do this is a tappet adjustment first then followed by the adjustment of the air mass meter screw....

failing that just check(but this needs to be done with a fault code reader) your coolant temp. or just change it for a new one.

good luck! shout me for more advice.
raymond