marshy
Well-Known Member
hello i have a komatsu pc220-5 and its bogging down with every movement of the bucket, could it be a solenoid any one please help
Did you ever figure out what this was? Working on a friends PC220LC-3 exhibiting similar problems. Been sitting for a few months, got it started then it died. I think it ran out of fuel so put more fuel in, bled the injectors and it's running and sounding normal. But the moment I hit any controls, it will practically kill the engine. I mean just trying to lift the boom almost stalls the engine from mid throttle. It seems more like a hydraulic problem to me than fuel as the engine sounds fine when no load is on it.
^ what he said
Could be a stroke limiting valve....Basically the pump is pulling the motor down.