Fuel filters have the primary function of filtering dust and particles from fuel. They are typically made into cartridges in your car. Knowing when to replace fuel filter is important for keeping your car in shape. To know when the fuel filter is dirty, you need to remove it from your car and blow through it. Then you have to gauge the resistance of the air when blowing through the filter. Minimal resistance means that the fuel filter is clean and doesn’t need to be replaced. However, if there is more resistance, then the fuel filter is dirty and needs replacement.
A Word of Warning
A word of caution should be said about testing if your fuel filter is dirty or not. Gasoline is a very poisonous substance, so you must not blow directly into your fuel filter. Instead, use a clean, rubber hose and blow through that.
What a Clogged Filter Will Do
It is important to know when to replace fuel filter, because a clogged fuel filter will immediately stop your engine by hindering the flow of fuel to your carburetor or injectors. This will stop your engine cold, and your brakes could stop working as well.
This is a dangerous situation to be in, so you have to be vigilant about replacing your car filter. A filter that is only partially clogged will allow fuel to pass through, sufficient enough for low speeds. This will cause your engine to stutter when using the car at high speeds. There are some filters that have a bypass mechanism, which will allow fuel to pass through. However, this can create additional problems because dirt and particles will go into the carburetor or injectors.
Need Help?
If you need help in locating a professional to help you replace your fuel filter, TalkLocal can help you. We will connect you with up to three, high-quality professionals in just minutes, for free.
