I have a 1998 exmark lazer ZHP model# LHP4417ka 19hp kaw engine it was running fine. When I shut it down it would not restart I replaced the modules but there is no fire at the spark plugs and the starter relay won't click or do anything but I can cross fire the relay and it will turn over.Can a relay denie power to the ign modules?????? Ps glad to be aboard the LMF