I think i've got a fuel issue.... my car is a 92 300d 2.5 turbo w/ about 280kmi. It had new injectors done about 1500 miles ago. ANyway, i wasgetting off the highway about a week ago and it just started billowing black smoke out the back. I mean James Bond style smoke screen smoke!

Anyway, i'm thinking it might be a head gasket, but the car didn't overheat, and it was black, not white smoke. My other thought was that it could be the injector pump- it hasn't been rebuilt in about 100kmi. My thoughts are that if it was the IP, then it would have started to smoke over time- i mean this car had NO smoke prior to this and didn't burn any oil (it would be about a quart down at every change, but no more).

Any thoughts on this?