CAT 279C with 4900 hours. Worked the machine clearing brush today for 5 hours or so. The last hour it started to lose power, especially in drive. It would bog down and the machine would barely move and then it would sputter like there was air in the fuel. It stalled a few times. When you start it back up, it has full power and hydraulics for a few minutes then it loses power again. Any ideas? It has a new fuel filter and there is no air or water in the lines.
Tank vent, maybe a weak fuel pump
Possible foreign object getting sucked into fuel pickup and it releasing when suction is released.
We've had more than a few issues with the electric lift pumps on Cat skid steers. Usually when they go they will seize up and pop the fuse though.
I took a chance on a new priming pump ands wow!!! Thing runs like a scalded ape now! I guess they redesigned these due to a high failure rate, but I am now back in business,.
What machine do u have