I have no spark coming out of my coil on my 79 ke55. Have tried everything to get spark out of it. The coil is only about 18 months old and worked previously. The only thing that I have done is put another 4k motor in with a 5speed manual, the car was previously auto. The car was running with the auto in it but now won't get any spark. I'm using the original harness to the car. Can anyone think of why I'm not getting any spark