How to Clean the Fuel Tank Vent Hole?

[Joshua]

Here are the methods for cleaning the car's vent hole: 1. Add "Fuel System Cleaner." Adding a cleaning agent to the gasoline is the easiest method to operate, but the effect is not ideal. In daily use, the cleaning effect of fuel system cleaners is minimal; 2. "Hanging a Bottle." The hanging bottle method is similar to the form of an IV drip in a hospital. The cleaning solution is injected into the valve, resulting in a better cleaning effect. This method does not require disassembling the car engine and is also a more effective cleaning method; 3. Remove the engine and take off the cylinder head. Disassembling and cleaning is absolutely the most thorough and direct cleaning method, and the cleaning effect is also the best. Here are methods to prevent the vent hole from clogging: In addition to regularly checking the vent hole, it is best to take preventive measures in advance. When opening the fuel tank cap, there will be a sound of airflow. This sound can be divided into two types: one is the sound of air escaping, which is normal, especially in hot summers; the other is the sound of air being sucked in. If there is a sound of air being sucked in, it indicates that the pressure inside the fuel tank is lower than the external pressure. In this case, it is possible that the vent hole is blocked or partially blocked to varying degrees.