A car’s fuel filter ensures proper combustion. By keeping contaminants from reaching the engine, it prevents costly breakdowns and improves gas mileage. An auto mechanic may replace this component during a routine tuneup. Learn more about the importance of this auto part to understand why this service is helpful.

Common Questions About Auto Fuel Filters

What do they do?

Typically fitted to the outside of the fuel tank or directly on the fuel line, the filter removes sediment from gas as it leaves the tank before it enters the engine. This protects the engine from clogs, improving efficiency.

The filter is designed to withstand the high pressure levels of the combustion system. It may be designed for the gas blend specifically required by the manufacturer.

What happens if I don’t change it?

The filter becomes clogged with sediment over time. This can lead to clogging in the engine, which can lead to loss of power, overheating, and burnt-out pistons. Alternatively, too much fuel might enter the line, decreasing fuel economy.

How often should I have it changed?

On an older car, this part should be changed every two years or 30,000 miles. You may be able to go longer without a swap if your vehicle is more efficient.

Consult the owner’s manual to discover the ideal interval for your make and model.

What are some signs I should replace mine?

If the filter is clogged, your engine may sputter or die as you accelerate, or not have as much power as before. A dirty filter can also cause rough idling and poor gas mileage or prevent the car from starting altogether. 

To determine if your unit needs to be replaced, have an auto mechanic perform a gas pressure test. A reading beneath the normal range of 30 to 60 pounds per square inch (psi) indicates the component is decreasing the level of fuel in the engine.

For a full-service tuneup that includes a filter check and replacement, contact the trusted auto mechanics at F.A.T.S. Service in Anchorage, AK. Since 1984, their team has offered high-quality, affordable auto repairs. Their mechanics are certified by the Automotive Service Excellence. Call (907) 561-5721 to request a free estimate or visit their website to learn more about their tuneups.