I have replaced the coil,ignition is sending signal, tach is sending fine but still no spark from the coil. The boat ran fine all week exept there were a couple times it would take several cranks to start. I backed it of yesterday and it ran for a caople minute nedless to say i forgot to put the plug in but noticed it very soon as a jumped in and put it in the water had reached the trans but that was as far as it got. I am dealing with a 2000 direct drive mercruiser 5.7 mag mip if anyone has anything to offer i would appreciate it. Thanks