Visible fuel leak from base tank or fuel lines under the MTU standby generator

Safety first: Stop the generator, shut off fuel supply valves, and eliminate all ignition sources. Use spill containment.

• Identify leak source: Wipe down lines and fittings, then observe where fuel reappears. Check flexible hoses, hard lines, and tank seams.
• Tighten fittings: Carefully tighten any loose fittings, avoiding over-tightening which can cause damage.
• Replace damaged components: Replace cracked hoses or corroded sections of pipe with MTU-approved fuel line components.
• Tank inspection: If the base tank is leaking, arrange for professional tank repair or replacement. Do not attempt temporary patches for long-term use.
• Leak test: After repairs, pressurize or run the fuel system and check for further leaks before returning the generator to service.