Expert Diesel Generator Troubleshooting

Correct diagnosis is the first step in effective diesel generator repair.

Problem: Won't Start

Check: battery (charge and connections), fuel (availability and bleeding), starter motor (wiring and relay), fuses.

Problem: Abnormal Noise

Knocking: loose connections or bearing failure

Whistling: belt or turbocharger failure

Backfiring: fuel system or timing issues

Problem: Excessive Vibration

Check: vibration dampeners, chassis leveling, three-phase load balance, bearing failure.

Problem: Voltage Drop

Check: AVR, electrical connections, overload, diode or stator failure.