I have a stock 1996 f250 7.3. The glow plugs just went out of it and I am going to get them changed butttt the problem is my truck is blowing white smoke! If I let it sit and idle for a minute and get in and start to drive it will blow white smoke, also if I have a load on and start in 1st it blows white smoke and also when I shift down and press the pedal down it does it also.. I have been noticing bad fuel mpg and using a little oil.. I replaced the IPC sensor but it was replaced with an older one off a broke down truck so could that be the problem or is it the glow plugs? if anyone knows what is up with this please help,, thanks!