I previously had a problem with the cold start, for which I eventually found the part responsible and replaced it, and now I seem to have a problem once the motor is warm. It is a B21 motor, injected, and once it becomes warm (and I am guessing the cold start system goes off-line) it won't idle. I have tried adjusting the idle screw to no effect. At the moment the only thing that makes the car drivable is tightening the throttle cable a little. The manual doesn't seem to have any suggestions, does anyone in here?

Cheers