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I have a 98 ford f150 and i got the coil pack wet during a radiator flush... i kno dont ask... but anyway my truck is misfiring cylinders 4 nd 5 should i buy a oem coil? Or it doesnt really matter??
Before you go out and buy new coil packs pull the spark plug boots and make sure there is no coolant in the plug wells. This condition will give you misfires as well.