short on 1999 Ford F-250 Super Duty

the number 30 fuse keep blowing which is for the glow plug relay and the injector module drive i uhooked every thing off the new glow plug relay it steel blew that fuses then i unpluged the injetor drive module relay it stopped i was wandering if it is the injector drive module or if it is a short in the wiring

1 answer
most likely one off your valve cover gaskets has shorted out