I have a 04 f250 6.0 and I was traveling down the road and it started acting like the transmission was slipping. I turned around and came home,on my way home it was like it had no power and it stalled out and died. I just changed the fuel filters and it is blowing a ton of white smoke and it turns black when I give it the gas. Any ideas of what is wrong?

• White smoke is a sign of water vapor or fuel that has been atomized, but not burned. Water vapor may be present in the fuel, or water may be leaking into the cylinders from the cooling system. Also, air in the fuel can cause white smoke. White smoke usually occurs when there is not enough heat to burn the fuel. The unburned fuel particles go out the tailpipe and typically produce a rich fuel smell. It's not unusual to see white smoke in the exhaust, during cold weather, until the engine warms up. Bad glow plugs (burned out, coated with carbon, or not receiving proper start-up voltage) or a faulty glow plug control module can cause white smoke on engine start up. Low engine cranking speed may also produce white smoke. If white smoke is visible after the engine has warmed up, the engine may have one or more bad injectors, retarded injection timing, or worn injection pump. Low compression can also be a source of white smoke.

• Black smoke is a sign of engine overload, restricted air supply, or malfunctioning injector. For some reason, excess unburned fuel is being blown out the exhaust. Black smoke is usually a signal that there's too much fuel, not enough air, or injector pump timing is off. One of the most common causes of this condition is an air inlet restriction. The cause may be a dirty air filter, a collapsed intake hose, or an exhaust restriction.

Another possibility is a leaking Modulator which uses engine vacuum for operation, if it leaks, it will suck transmission fluid into intake and create white smoke, the slipping may be due to your fluid being sucked out through the Modulator?