My car has white smoke coming from the tailpipe.

What is your question?

The smell and smoke comes through the air vents and pollutes the car. It's misfiring and burns through gas very fast. Sometimes it turns off completely and I have to wait to try to turn it back on. It usually would go back to driving perfectly when I put Lucas fuel injector into the gas tank. It's 4 months later and that has stopped working. Now it smokes with the injector included. So far I've oh have the wires , sparks , rotor cap replacements. The mechanic that fixed it thought it was a faulty ECU ECM but I don't think so. Now it's at another shop undergoing diagnostic . Also there is loss of power and and it will barely drive while smoking.