Where is the Evaporative Emission System Leakage Fault Located?

1 Answers
ElliottMarie
07/24/25 6:27pm
Evaporative emission system leakage may be caused by damage to the evaporative emission system solenoid valve, damage to the evaporative emission system piping, or blockage of the filter at the air inlet at the bottom of the activated charcoal canister by dust and impurities. Below are the relevant details: 1. What is the evaporative emission system: The evaporative emission system, also known as the gasoline vapor emission control system, is one of the auxiliary control systems of the automobile engine and one of the automobile engine emission control systems. The evaporative emission system collects gasoline vapor from the fuel tank and directs it into the cylinders for combustion, thereby preventing gasoline vapor from being directly discharged into the atmosphere and causing pollution. At the same time, it controls the amount of gasoline vapor introduced into the cylinders for combustion according to the engine operating conditions. 2. Causes of damage and solutions: The damage may be due to reasons such as damage to the evaporative emission system solenoid valve or damage to the evaporative emission system piping. Since the actual vehicle cannot be seen, an accurate fault diagnosis cannot be made. It is recommended to contact the local 4S store for inspection and repair.
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