Fault Phenomenon: Cat diesel forklift instrument displays fuel water contamination alarm, engine runs unevenly.

Troubleshooting Process:
– Checked fuel-water separator: water present at the bottom.
– Checked fuel tank: water accumulated at tank bottom.
– Checked fuel quality: fuel emulsified.
– Checked sensor: sensor false alarm.

Root Cause: Excessive condensation water in the fuel tank or water mixed in during refueling.

Required Parts: Fuel filter and water draining treatment.