How to Fix / Troubleshooting

Safety first: Stop the generator, isolate fuel supply, and eliminate all ignition sources. Use absorbent material to contain spills.

Locate leak source: Trace wet fuel trails from the lowest point upward to find the origin (hoses, filters, tank seams).
Tighten fittings: Carefully tighten hose clamps and threaded fittings, avoiding over‑tightening plastic components.
Replace damaged hoses: Cut out and replace any cracked or swollen fuel hoses with diesel‑rated hose of the correct size.
Inspect filters: Ensure fuel filters are correctly seated and gasketed. Replace if in doubt.

Significant tank or hard‑line leaks should be repaired by a qualified fuel system technician.

Visible fuel leak under or around Atlas Copco standby generator enclosure

Possible Causes