I have a 96 4.3 vortec with about 115,000 miles. there are several issues i am having with my truck. the first is that i have a mixture of gas in my oil. Along with raw fuel sputtering out of my exhaust, with the gas there is a constant cloud of white smoke being emitted. the engine runs rough and idels just as bad. there were several codes that came up: MAP sensor, Mass Air Flow sensor which were replaced and random misfire on all the cylinders.
the problem just happened as i was driving no other warning signs. email add is fluntag@yahoo.com thanks for the help