Fuel Caps

Editorial Staff

Monday, February 27, 2023 at 02:27 PM ET

Verified

Key Takeaways:

Fuel cap defects, including wear, obstruction by lanyards, or being completely missing, frequently lead to fuel leaks, siphoning, and critical fuel loss or engine failure.
Malfunctioning fuel cap vents or plugged fuel system vent lines are a common cause of engine performance issues, such as power loss, rough running, and auto-siphoning.
Structural failures of fuel caps, like internal component breakage or discovery of foreign plastic pieces, also occur and contribute to fuel system anomalies across various aircraft types.

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Beech C90A King Air

Worn Right Fuel Cap

Editorial Staff