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What Causes a Minor Leak Detected in the Fuel Tank Ventilation System?

1 Answers

VanBentley

07/29/25 4:05pm

A minor leak detected in the fuel tank ventilation system indicates a fault within the vehicle. Below is an introduction to the automotive fuel tank: 1. Overview: The automotive fuel tank is the full name for the car's fuel storage system. 2. Working Principle: (1) Utilizing the heat energy generated by the car engine, a thermal circulation system is added between the engine, fuel tank, and radiator. (2) The original single fuel tank is redesigned into a combined fuel tank consisting of a main tank and a subsidiary tank. (3) A water heater is installed at the bottom of the fuel tank to use the heat energy generated by the engine to warm the main tank. (4) The fuel supply pipe of the main tank and the oil pipe of the subsidiary tank are connected to the engine's oil circuit through an oil circuit switching valve. The subsidiary tank is used when starting the vehicle, and after driving 5-8 kilometers, the switching valve is operated to switch the oil circuit to the main tank.

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