If I could add one question to this thread. I'm also having spark issues. (when looking down from above) The left coil wires (yellow and black/yellow) have power a solid 10.5 on the multimeter. But the right side (black and yellow and blue) wire, have nothing. The most I can get out of them is a small 0.3 on the mulitymeter. I'm getting ready to just follow the wires and see if it is a bad connection. I doubt that both wires broke. Would these ignition boxes drop just one side? I think the black/yellow wire are both from the same sorce and the blue and yellow come from different sorceress. So I think it is just that the blue wire is not getting power. Any idea on this issue? I really don't want to have to buy new ignition boxes.