I bought this truck for 600 bucks from a friend an need help, I've given the truck new sparkplugs an wires yet I still have a miss on the 4th cylinder. I believe its the injector possibly not working cuz the truck gets fire. (I pulled the plug off trying to figure out which cylinders actin up an got to #4 an got nocked off the truck.) I'm going to be getting valve covers for the truck an need to no if I also need to get a plenum gasket kit when I replace the injector

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94 Ranger Ext. Cab 4x4
4" superlift lift kit/31x10.5x15 mud brutes/ Eddie Bauer edition ford explorer seats, and dash/ and a Flying Silver Eeagle hangin from the rearview mirror