Hi Rick1959, Welcome to 2carpros and TY for the donation
Lets check the fuel pressure with a fuel pressure tester if its within specs if okay -clean out the idle air control valve and EGR valve and then test the throttle position and manifold absolute pressure sensors.
Also try this next time it refuses to start do below immediately don't wait for nothing this will give a basic idea about the fuel and spark
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard
Tuesday, July 6th, 2010 AT 11:30 AM