Started acting funny one day, like it was starving or hesitating for fuel or air. Would idle real high like 1200 to 1400 rpm's. Anyway made to O'Reillys ran a check n said o2'S, EGR, purge silianode were bad n a miss fire on #1. Replaced all n it got worse. Come to find out plug wires were bad. Got everything in order, now won't run n it backfired on me. PLEASE HELP, before I have to spend money that living on a fixed income, that I will never have.