Technical Uno Turbo mk2 overfuelling and high HC

[Yeti]

Working on my mates Uno turbo, about 3 solid days of welding and loads of other problems, but all good for the MOT now except for the sky-high hydrocarbons!

I can actually taste the unburnt fuel in the air when it's running, and the plugs are carbon fouled after only 30 minnutes total running time - to the extent that it won't start.

Going to try a new Coolant Temp Sensor (the one for the ECU), but does anyone else know of anything likely to go wrong on these, or how to test it?

Thanks.

 

[oldskoolmk1unoturbo]

theres obviously something wrong everytime i've taken my turbo for a mot they pass the emissons easy

 

[antsuno2]

maybe faulty fpr, or afm, lamba probe, injector, Ant!

 

[Yeti]

maybe faulty fpr, or afm, lamba probe, injector, Ant!

I've checked what's there as best I can - the FPR is a possibility, injectors are fine, because all 4 cylinders are overfuelling equally.

It doesn't have a Lambda probe - it's an H reg, with no cat.

 

[Biz]

Has the AFM metering screw been tamperd with?
The amount injected is governed by that screw

As you say, all 4 cylinders equally overfueling, that would be the 1st place id start

Or it could still be on cold-start (Crappy water temp sensors)