Centurion Stall Under Load

Generator starts but immediately stalls when load is applied from the transfer switch.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Fuel pressure too low under load, Severely clogged air filter, Overloaded generator beyond Centurion rating, Weak ignition under high cylinder pressure

How to Fix / Troubleshooting

Safety first: Open the generator main breaker so the unit can run without load during testing.

  • Run no-load test: Start the generator with the main breaker open. If it runs smoothly, the issue is load-related.
  • Replace air filter: Install a new Centurion air filter if dirty or oil-soaked.
  • Reduce load: Temporarily disable large loads at the transfer switch or main panel and retest.

When to call a technician: If the engine still stalls with moderate load, a technician should check fuel pressure and ignition performance.

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Repair Difficulty

Medium 3/5

Required Part

Air Filter
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