Got a problem with a coil that overheats. Working 1979 chry 318 IB 225hp with electronic ign. I read 7.4 v at b+ of coil with ign switch on but eng not running. Start eng and voltage fluctuates so I am unable to get a steady reading. The coil will get very hot to the touch and eng will stop after about 30 min. Stbd eng runs fine and coil is half the temp. Coil has been replaced as well as ign module. Any help or ideas to check will be appreciated.
