mercruiser1998 5.7 tbi I had another post on having a bad fuel injector same engine. new prob engine run fine starting it and let it mabe 5 mins. or even 20 mins then blows ing. relay fuse15 amp and also kill fuel pump circuit .put in new fuse and back running again.how long?looking at dia.that is the emc/dlc battery fuse.also new fuel pump. I checked amps when running 7amps. looking at dia. electronic spark control module mabe it can short to ground once in while?any ideas would be great thanks bcclew ps ran fine out on water 3500 rpms 20 mins than blew fuse