I have a 2002 dodge ram van 3500 with 5.9l engine. Drove to the lake and when I was ready to come home I started the van and put in gear and it died. Had it towed home and won't start. Changed distributor and rotor cap, has good fuel preassure, and has spark at all plugs. When I pull the plugs they are wet of course I poured fuel down the throttle carb but plugs have spark but still not firing.