s10 still runs rough white smoke

I found gas mixed in the oil...several said change the Injector Module with the 6 injectors spider thing ($300+ part)...We had a friend put a new one in...then we Changed the oil and filter, put new spark plugs in...It runs very rough and has white smoke coming out With black stuff showing up on the driveway...Any suggestions what to do next?

Usually, white smoke equals coolant (steam) - blown head gasket. Or, did your friend replace the intake manifold gasket during this "fix?" If so, I'd bet it's leaking internally. Check it soon as coolant kills O2 sensors very quickly.

LOL

coolant or gas in the oil will also score the crank bearings...