I baught a flooded diesel vauxhall combo van. Easy to start but brings out white smoke, I drove it for more than 100miles, runs well but missfires yu can feel it wants to go but its being choked. the diesel in the tank is fine, i had the injectors tested & they are fine.

I thought if its water it was going to clear after a long drive but this has not hapened. please help. i have no money to buy another engine.