Honda Engine Coolant Leak

Generator leaks coolant under the unit or around the radiator

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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

Loose hose clamps, Cracked radiator or coolant hose, Failed water pump seal, Damaged coolant reservoir or cap

How to Fix / Troubleshooting

Safety first: Allow the engine to cool completely before opening the cooling system. Hot coolant can cause severe burns.

  • Locate leak: Inspect radiator, hoses, water pump, and reservoir for wet areas or dried coolant residue.
  • Tighten clamps: Gently tighten hose clamps at all hose connections.
  • Replace damaged hoses: Install new coolant hoses if cracks or bulges are present.
  • Check radiator and cap: Replace a leaking radiator or faulty cap with Honda-approved parts.
  • Refill and bleed: Refill with the correct coolant mixture and bleed air per the service manual. Monitor for further leaks.
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Repair Difficulty

Medium 3/5

Required Part

Radiator Hose
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