Hey guys how are you, recenty bought a non A4 B6 1.9tdi with juat over 200k km on the clock which was inneed of a fuel pump in the tank.

I bought one and put it im and now it starts , idles rough , smokes and has absolutely no power to move. Friend who did a diagnoatic says i probably need 3 injectors which I'm not too convinced about . PLEASE HELP