just changed fuel filters on 2004 f350 and now smokes badly. white/grey smoke out exhaust , so bad i cant drive it. any chance injector got clogged filter waswnt that bad but was time to change. now smoking bad

I have moved your post, you posted this in the forum help area were people ask for help on how to use this site.

Please take time and look the site over, it can be somewhat confusing to start with. I know you will love this site after more usage

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. I only recommend Motorcraft filters, when changing the under hood and under frame fuel filters, on PSDs.