What does high fuel tank pressure mean?
1 Answers
High fuel tank pressure occurs when the temperature of gasoline increases during driving, causing slight evaporation. This results in the formation of gasoline vapor inside the tank, leading to increased pressure. It is recommended to use a fuel additive to reduce the pressure. The causes of high fuel tank pressure are as follows: 1. Clogged fuel tank cap regulator valve: High fuel tank pressure may be caused by a clogged fuel tank cap regulator valve, a blocked carbon canister, or a damaged solenoid valve. If the fuel tank cap regulator valve is clogged, it will lead to excessive pressure inside the fuel tank. In this case, the valve should be disassembled and cleaned. 2. Carbon canister blockage: If the fuel tank is overfilled during refueling, some fuel may evaporate and enter the carbon canister, forming particles inside and causing blockage. If the solenoid valve is damaged, the engine's pipeline system cannot properly ventilate, preventing the release of fuel vapor from the fuel tank and causing the internal pressure to rise. 3. Hazards of high fuel tank pressure: Excessive fuel tank pressure can make refueling difficult, as fuel may not enter the tank properly. Moreover, if the fuel tank pressure remains high for a prolonged period, it can cause the tank to deform and may also damage the fuel pump. High fuel tank pressure is a common issue, but it can generally be avoided by regularly cleaning and maintaining the fuel tank and not overfilling it during refueling.
