Allright, ive got an odd problem that I can't figure out...My MJ will start right up and has been running pretty well. Recently it has started to have a stumble when you give it gas though. It stumbles any time that you accelerate quickly. If you press the gas pedal very softly it will actually slow the engine down and shut off. The odd part is that it won't fire back up. It will get close the first time you try to start it, and regress to the point where it is just the starter cranking with no chance of spark. Now if I let the truck sit for say 5 hours I can go outside and it will fire right up like nothing happened, but then the process starts all over again....ANY suggestions on what i can/should do to figure this all out......thanks