i have a 94 f-150 not familier with fords, but bought truck it ran good when it would get warm it would take it longer to start, usually turn key off and then try again and would start , then one morning wouldnt start at all, wasnt fireing at coil, so that evening replaced coil, started ran fine all day, and the next day, then parked the next night woke up the morning after, wouldnt start, n0ot fireing at coil again, so when i come home at diner i unhooked coil for a few min hooked back up it started ran fine rest of day that night i went ahead replaced coil with m.s.d coil replaced ignition module and distributer cap and rotor button, truck ran good for about 4 days no problems, then parked it sun night, woke up mon morning and wont start not fireing at coil, it has hot to hot side but when i spin it over with test light hooked to hot wire and ground i get nothing. been told could be pickup coil in distributer, any sugestions.