i have an 86 f150 EFi 302 a few weeks ago i ran some bad gas through it and fouled out the plugs. so i put new plugs and wires on. drove about a week and it acted like it fouled out the 5&6 plugs again. so i put another set of plugs and wires on it but still the same. i replaced the rotator and dist. cap, and no change, i can even pull the wires off the plug and it is sparking but the idle is still the same weather 5&6 are plugged in, the plugs are wet so it is getting gas, and fire, but i cant figure it out, any suggestions?