JCB
Fuel System Leak
Visible diesel leakage around the base frame or inside the canopy, with no specific controller alarm.
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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
Cracked flexible fuel hose, Loose banjo fittings, Corroded base tank, Faulty fuel return line
How to Fix / Troubleshooting
Safety: Eliminate ignition sources. Use spill kits and dispose of contaminated materials properly.
- Locate leak: Wipe down fuel lines and run the engine briefly while observing for fresh wet spots.
- Tighten fittings: Carefully tighten hose clamps and banjo bolts on the JCB fuel system. Do not overtighten plastic fittings.
- Replace hoses: Any hose showing cracks, bulges, or weeping should be replaced with diesel‑rated hose of the correct size.
- Inspect base tank: Check welds and seams on the integrated base tank for corrosion or pinholes. Repair or replace the tank if leaking.
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Repair Difficulty
Medium
3/5
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