how did you check there is no spark at the coil was it against the block it could be there is a bad earth maybe try puttin a jump lead across from the battery to the block and also a new alternator maybe ,some of my suggestions might sound daft but from previous exp could be somethin and nothin so much easier if you were near by ,just a thought but have you removed the little black thing in the wires to the coil forgot what it does but if it goes fooked can cause problems try bypassin it im as confused as you are defo sounds like electrical problem