my 87 240 will crank over but not start. it was working fine until one day i went out and it would not start. there is current going to coil but none going from coil to distributor. i changed coils and coil wire but same problem. the positive side of coil and the ground side both have current when the car is switched on. also the fuel pump is not coming on so i ran a jumper wire on the relay and the pump is working but it still will not start. where coule my fire have gone. please help. thanks