My MSD wires that don't even have a full season on them are dry and cracked at the middle of the boot/ top of the spark plug.My headers are stock Mer Cruiser headers running water thru them. The boat started running like it was starving for fuel or mis firing really bad but intermittently ,not the hole time it was running.My water pump is working good.
Are the plug wires getting too hot and why?
Is this from mis fire?
Any one know what may be causing this?
What would be a better set of plug wires to use?
Thanks for the help.