i had this start two days ago, turned it off, wont start up again with out reving it up high for a minute, then no problem. today i go to start it up und it wont start. trys to turn over and keep going, but dosnt. there is gas in it. fuel cap is on tight. fuel in the injector rail. spark plugs semi-new, air filter two months old. any ideas? its a 96 4.0
