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View Full Version : Ford 7.3 diesel problems


Rich Baker
Apr 14, 2013, 08:49 AM
I have a 1999 Ford F250 Super duty with a 7.3, manual trans, and a banks kit with an edge tuner. The problem I am having is when I go to start it, it won't start on the first try, and second or even the forth try, I will cycle the key and it will keep turning, but won't start, when it does, it is fallowed with a bunch of white smoke, then the smoke will subside and run fine. Injectors? Glow plugs?? I love my truck

Thanks, Rich

TxGreaseMonkey
Apr 14, 2013, 10:37 AM
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.