What Causes Fuel Leakage When the Tank is Full but Not Under Normal Conditions?

[OJuliet]

If fuel leakage occurs when the tank is full, you can inspect the fuel filler pipe and the lines from the fuel tank to the charcoal canister. Then, check the installation of the fuel pump, as loose or aged connections can also cause issues. Additionally, it's advisable not to fill the tank completely; filling it to about 70-80% is ideal. Here are other reasons that may cause fuel leakage: 1. Overfilling the tank: In most cases, fuel leakage happens because the driver overfills the tank, leaving excess fuel that cannot be burned as vapor. Typically, every vehicle has an activated charcoal canister located on the right side of the engine compartment, designed to absorb fuel vapors. 2. Loose fuel filter pipe connections: This can lead to leakage under the car. During replacements, it's possible for some pipes not to be securely connected, which may result in fuel leakage under the vehicle.