Our lb75b was have some loping at idle for a few days then yesterday while operating it got really bad and then stalled was able to refire and move to location to look at it but stalled several more times. We found fuel filter completely clogged due to a filthy tank drained tank replaced filter it would then start (but hard to start) it thenrun s at 2000rpm for several mins then slowly drops off till it stalls (unless accelerator pedal is quickly pushed to floor then released then it starts back at 2000rpm again) other than that no real throttle response also has no power to do any at this high idle. We bypassed fuel tank to another clean tank with fresh fuel bled all lines starting with fuel pump then inlet fuel filter then inlet to injector pump then outlet of injector pump then at each injector also made sure return line was not clogged but still have the same problem. We have worked on many tractors in the past but we are baffeled at this problem. Also there are some wires going to the injector pump some type of solenoids im assuming. Please Help as you all know time is $ and I need this thing running yesterday!!!!
new holland lb75b loader/backhoe problems
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