Generac
No-start condition without logged fault
Generator cranks normally but does not start; no error code displayed.
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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
No fuel supply to engine, Ignition system failure, Severely fouled spark plugs, Low compression
How to Fix / Troubleshooting
Safety: Turn OFF automatic mode. Avoid extended cranking to prevent starter damage.
- Verify fuel: Confirm gas valves are open and that other gas appliances are working. For LP, ensure tank has fuel and regulator is not iced.
- Check for spark: Use a spark tester on each plug wire while cranking. If no spark, troubleshoot ignition coil and control board.
- Inspect spark plugs: Remove and inspect plugs. Clean or replace with OEM Generac plugs if fouled or worn.
- Compression check (advanced): Perform a compression test. Low compression indicates internal engine issues requiring professional service.
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Repair Difficulty
Medium
3/5
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