Although this is not fiero related I have a 96 K1500 Z71 I am trying to diagnose. So the story goes my friend uses this as a hunting truck. He got it stuck in the mud one day and then later pressure washed the engine off. Since then I have a hard starting situation only when the engine is cold. I have to turn the engine over and over to get it to finally start when cold. When it's hot it starts right up. When cold I can spray a little starting fluid in the intake and it fires right up. I have checked TPS voltage, fuel pressure, and have changed plugs, cap and rotor. All of those readings are normal. I have replaced the coolant temp sens and tried a known good MAP sensor. Still the same result. I have also replaced the oil pressure switch. No change. I'm down to concluding that maybe it's the vortec(spider) injector module as I know these things are problematic. Does anyone have any insight on this issue??? I am about damn near hands tied otherwise. the truck has about 250,000 miles and runs great otherwise. HELP!!!!
