hello,three days ago truck hesitated starting acted like it was not getting enough gas,drove it and ran ok,later it would not start,came back later it started hasitated again but ran repaired leaking hoses that ran off the thermostat housing,then,it would not start. ISecond day did add some Gumout fuel additive to gas tank filled it up drove home,15 miles . seemed fine.the hoses run up to the carb.the engine is a KA24e 4 cyl.multiport injection.Put fuel filter on about a year ago.Any help appreciated. thanks darell