Komatsu FD25-17:
Komatsu 4d95s engine running trouble

Hello everyone first of all I'm new to the forum. I'm a forklift dealer in th UK.

I have a FD 25 with an 4D95s motor. It's recently had reconditioned injectors, new rings and honed bores. With the new head gasket fitted, skimmed head and valves adjusted I started it up to find it ran poorly and struggled to rev up. I cracked the injectors and found that cracking no.1 made no difference to the engines running which suggested the problem being on that cylinder. When number 2, e and 4 were cracked the engine cut out. I compression tested 1 and 2 which had pretty much the same reading. I swapped 1 and 2 injectors around and the same problem.

Any suggestions? Also the fuel stop solenoid doesn't work and is stopped manually by cable.

Thank you.
  • Posted 20 Oct 2015 07:33
  • Discussion started by kelvin_h
  • Beds, United Kingdom

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