Hi all, I have a pair of 1990 crusader 454s FWC and am having a hard time trouble shooting an ignition issue. The starboard engine doesnt have any spark from the coil (Sierra 18-5443 type) I've swapped coils with other engine and both work fine on the port engine. I'm getting about 11.8 volts at the leads on both engines with the key in the on position, all wiring seems intact. Swapped batteries, cranking is good, plenty of battery just doesnt want to put out any spark, help, please!!! At my wits end.