Fuel System Visual Inspection

What's Included

• ✓Inspect all accessible fuel hoses for cracking, chafing, or hardening
• ✓Check fuel tank fill deck plates and vent fittings
• ✓Inspect fuel filter (primary and secondary) condition and water separator
• ✓Check fuel shut-off valve operation
• ✓Look for staining or residue indicating past leaks
• ✓Document condition and recommend replacement intervals

Why It Matters

Fuel leaks cause fires. Hardened rubber fuel hoses degrade from the inside—they look fine externally but collapse under suction, causing fuel starvation and stalling. In emergencies at sea, a failed fuel line can isolate you from power when you need it most. Deck fill gaskets dry out and crack, allowing saltwater contamination into the tank.

Clogged fuel filters cause engine stumble and stalling offshore. Water in the fuel tank (from condensation or saltwater intrusion) destroys diesel injectors and corrupts gasoline carburetors. ABYC standards require accessible fuel shut-offs for safety. An annual inspection catches problems before they strand you or endanger your crew.

How Mark Does It

1. 1.Locate primary fuel tank fill, vent, and pickup fittings
2. 2.Inspect all hose runs from tank to engine
3. 3.Check primary fuel filter bowl for water or contamination
4. 4.Operate fuel shut-off valve
5. 5.Inspect deck fill plate gasket (common leak point)
6. 6.Sniff for fuel odor in engine space and bilge
7. 7.Document findings with photos

Related Services

• Bilge Cleaning & Bilge Pump Testing

  Keep your bilge clean and pumps functioning to prevent fuel and water contamination.

• Raw Water System Descaling

  Protect your cooling system from saltwater buildup and corrosion.