Hi Gents I've been away on business so have only just seen your replies. Thanks alot, very useful. My exhausts are covered in soot too. I have this motor in the garage at the moment having a full service and tune up. The guy at the garage says that my idle speed is a little quick 9750rpm) at idle wh...

I have a 1990 XJR-S 6.0L that has done 94500 miles and reguarly serviced. Everytime I start the car there seems to be excessive smoke from the exhausts. It is not apparent when driving but only when stationary. It is worse in the cold weather. It is not oil. I am sure the head gasket is ok, it is no...