Yesturday I had spark at my plugs, but I had a backfire problem when I tried to start it, I realized that I had a timing issue( wires were in correct firing order), because I was messing with The dist. with the belt off to check my pre-amp(which I had to replace when I got the boat along with the ign. module, 24v cooks everything) so I adjusted my dist. according to the repair manual, and now I am not getting any spark to my plugs. I have voltage going to my ign. coil, but nothing coming out of the coil. The coil reads good.(2.6omhs between primary wires and 265omhs between primary and secondary wires. I an totaly lost. If it reads good I would think it would work!