Diesel generator not starting is one of the most common issues. Main causes:

Battery Problems:

Weak or dead battery → Charge or replace battery

Corroded battery connections → Clean and tighten

Old battery → Replace (useful life 2-3 years)

Fuel Problems:

No fuel delivery → Check fuel pump

Air in system → Bleed fuel system

Clogged fuel filter → Replace filter

Contaminated fuel → Drain and refill

Starter Motor Problems:

Starter not turning → Check wiring and relay

Click sound without turning → Solenoid failure

Weak starter → Check battery and connections

Electrical Problems:

Blown fuse → Replace fuse

Broken wiring → Check and repair

Faulty sensor → Check and replace