i have a 190e 1985 2.3 liter and when i got the car it ran like crap so we worked on it. Found out the whole head was messed up, so we rebulit the whole head and check timing and alot of other stuff when we put the head back in and after head it was in. So we start it up and it is overheating,cuggin,black smoke is coming out of car, the battery drains very quickly, spark plugs turn black.
PLEASE HELP I DONT KNOW WHAT TO DO