RTSmith
Senior Member
Hello. Will try and keep this brief. 1997 Chev C-6500 with 3116 Cat and 6Sp. Engine AR#106-7877. 185HP. This is an old flatbed dump on the Christmas Tree farm. No tags, no insurance, never sees the road. And we aren't mechanics. Has started and run great for years. Got low on fuel, and when backing up a hill sputtered and quit. Added fuel. Ran, then quit. Replaced block mounted fuel filter which had rusty bottom to it. Started- idled 15 minutes fine, but quit when started to drive. Found a frame mounted filter by tank that was ancient and full of crap. Replaced it. Removed tank and dumped a ton of sludge out. Filled & reinstalled filters. Started and idled for an hour, and allowed us to rev it up. Head across the field and in 5 minutes quit. The upper filter was 1/2 full or less. We can find no external fuel pump at all. Routing is from tank, to frame filter, to a steel line at back of engine that goes to front of what we think is governor/injection pump. There is a check valve inline going into that, that we removed and checked and it was clean. We are certain that we can get fuel from tank, through bottom filter up to where the rubber line ties into the yellow steel line- if the pump would just suck it. Or is it- but why is the engine mounted filter sucking dry? It shows as a 2 micron- can it have clogged? Ideas please.