1990 Volkswagen Corrado "black smoke sluggish" Questions

black smoke and sluggish when accelerator is fully depressed i knw that it is running rich and have been told that that could be a sensor problem. what sensors if any should i replace. Also, my model

engine black smoking Sluggish and black smoke when engine revs Sounds like it is running really rich. Time for a tune up.

Black smoke and no power at times and no gas mileage."HELP" Car runs good but sluggish and then black smoke. IT IS RUNNING TO RICH.I DON'T KNOW WHAT KIND OF CAR IT IS.FIRST CHECK FOR CODES.IT IS ...

...black smoke have a turbo boost pressure test done under load on a chassis dyno under load the boost should be right up check for leaks in the intercooler hose fittings or cracks in the intercooler ...

black smoke again. Also when decelerating a clang clang clang noise is heard and it get sluggish till it has speed again. Have religiously changed oil and maintained other basic parts and fluids. Took

...smoke is black then it is fuel related,and you will see that in the preformance and fuel consumption,the car will appear to be sluggish.remove the breather pipe and see if oil is dripping from it,if ...

My 2004 ford diesel is sluggish on start up and blows black smoke sounds like an injector issue. a diagnostic tester could tell you which cylinder(s) are dropping off to determine.

Sluggish upon acceleration and blows black smoke Replace the EGR valve. It shouldn't cost anymore than a few dollars to replace.

...black smoke coming out of exhaust pipe and vehicle is running sluggish. Get your oil changed and have them use the engine cleaner. It sounds like you have a deposit built up your engline, meanwhile ...

...to restart very sluggish and blowing black smoke After you shut the car off and try to restart the car acts like it is flooding out and blows black smoke Map sensor is probably not working ...