Komatsu FG25SHT-16:
Shuts down

This machine will start and run 10 minutes then starve for fuel and shut down
Plenty of fuel from the converter to the injector
Any thoughts
  • Posted 16 Jun 2023 04:43
  • Discussion started by Jesusjohn
  • New York, United States
Showing items 1 - 5 of 5 results.
Thank you again, I'll give it a try
  • Posted 17 Jun 2023 19:05
  • Reply by Jesusjohn
  • New York, United States
Without knowing what the computer is seeing it's all a guess. The petal dance takes time to get right unless the petal is bad and then it would never work this sounds funny but l will try to help you to go through the petal first turn the key on then count in your head 1 Mississippi 2 Mississippi 3 Mississippi after the last Mississippi push the petal down 5times within 5seconds make sure the last time you are in the up position take your foot off the petal and count 7seconds just like you did in the beginning than hold the petal down until it blinks and start counting it should start after Ten seconds of it does not work turn key off and start over it takes practice also if you get it if it blinks ten times in a row that counts as a zero all the codes are four digits at end of the codes it will blink ten in a row three times if there are no codes try again and get back to me good luck
  • Posted 17 Jun 2023 11:07
  • Reply by Scott_
  • Pennsylvania, United States
If your Komatsu FG25SHT-16 forklift starts and runs for about 10 minutes before shutting down due to fuel starvation, there could be a few potential causes for this issue. Here are some thoughts and troubleshooting steps you can consider:

Fuel supply issues: Although you mentioned that there is plenty of fuel from the converter to the injector, it's worth double-checking the entire fuel system for any blockages, restrictions, or leaks. Inspect the fuel lines, filters, and connections to ensure proper fuel flow.

Fuel pump malfunction: The fuel pump is responsible for delivering fuel from the tank to the engine. If it's failing intermittently or not providing sufficient fuel pressure, it could lead to fuel starvation after some runtime. Have the fuel pump checked for proper operation and pressure output.

Clogged fuel injectors: Over time, fuel injectors can become clogged or restricted, leading to insufficient fuel delivery. This can result in the engine running for a short period before shutting down. Consider having the fuel injectors cleaned or, if necessary, replaced.

Ignition system issues: While fuel-related problems are the primary suspects, it's also worth checking the ignition system components. Faulty ignition coils, spark plugs, or the ignition control module can cause intermittent engine shutdowns. Ensure that the spark plugs are clean, properly gapped, and in good condition.

Engine overheating: If the forklift's engine is overheating, it can trigger a shutdown as a safety measure. Check the cooling system components, such as the radiator, coolant levels, water pump, and thermostat, to ensure proper cooling. Inspect for any leaks or blockages that may be causing overheating.

Electrical issues: Faulty electrical connections, wiring problems, or a failing electrical component can also cause intermittent shutdowns. Inspect the wiring harness, connectors, and battery connections for any signs of damage or loose connections.

Considering the complexity of forklift machinery, it may be beneficial to consult with a qualified technician or Komatsu service center to diagnose and resolve the issue effectively. They will have access to specific technical information and diagnostic tools to identify the underlying cause of the problem.
  • Posted 17 Jun 2023 09:45
  • Reply by telematicsguy
  • Utah, United States
Ben Buie
Yes we have a light, I attempted the pedal dance many times and couldn't get it to code.
No I don't have a gauge, the assumption is either there is an injector problem or the assist is faulty.
Your thoughts and thank you
  • Posted 17 Jun 2023 08:56
  • Reply by Jesusjohn
  • New York, United States
I read your post does the truck have the check engine light on and have you scanned the truck for codes also you say you have plenty of fuel what do you mean by that do you have a gauge in the primary port of the Nikki converter to check the pressure and if so what are you getting it should be 5psi steady. Get back to me
  • Posted 17 Jun 2023 06:22
  • Reply by Scott_
  • Pennsylvania, United States

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