1. Air in Fuel Lines: When you install a new fuel filter, there will be air in the filter and the fuel lines. Air in the fuel lines can cause engine hesitation, stalling, and rough idling. Filling the fuel filter with gas helps to eliminate air from the system and ensures a smooth flow of fuel to the engine.
2. Lubrication: Fuel serves as a lubricant for the moving parts inside the fuel filter, such as the spring and diaphragm. Pre-filling the fuel filter with gas helps to lubricate these parts and prevent premature wear and damage.
3. Proper Sealing: Filling the fuel filter with gas helps to create a proper seal between the filter and the fuel line connections. This prevents air from leaking into the fuel system, which could cause engine performance issues.
4. Instant Performance: When you prime the fuel filter with gas, the engine will start more quickly and smoothly because there is already fuel in the system. This is particularly important if the vehicle has been sitting for an extended period or if you've replaced other fuel system components.
5. Fuel Pump Protection: Filling the fuel filter with gas reduces the load on the fuel pump. When the pump doesn't have to draw fuel through an empty filter, it operates more efficiently and experiences less strain, extending its lifespan.
To fill the fuel filter, simply pour a small amount of gas into the filter housing until it's about half full. Then, install the filter according to the manufacturer's instructions. This ensures that the filter is properly primed and ready to perform its intended function.
Remember, never use brake cleaner or other solvents to fill the fuel filter, as they can damage the filter and the fuel system components. Always use clean gasoline for this purpose.
