04 wrangler, 4.0, cranks but wont start, girl says it was running when dash lights got screwy and it shut off, have checked codes, had an asd code, cleared it and it hasnt come back, have checked relays ,have power and ground where it supposed to be (havent checked when cranking) have changed crank and cam sensors, have a weak spark at plugs, have 50 lb fuel pressure , can spray start fluid or gas into intake and it backfires really bad, any help here?