Video: When Should the Fuel Filter Be Replaced

Video: When Should the Fuel Filter Be Replaced?

Fuel filters are necessary to keep contaminates away from the tank. This video is sponsored by FRAM.

CC: In a perfect world, the fuel tank would never have any contamination from dirt and debris. But, contaminates can find their way into the tank from gas pumps, filler neck and the from the tank itself. This is why we have fuel filters

The first line of defense is mesh fuel filter or sock mounted on the fuel pump assembly. This type of filter is a “lifetime” part of the fuel pump assembly buried inside the gas tank. The only recommendation is to replace it if it is clogged or the fuel pump is being replaced. New fuel pump modules usually come with a new filter or sock as part of the assembly, but if a customer is replacing the pump separately they should also change the filter and pickup screen.

On vehicles that have inline fuel filters, there may be a recommended service interval that is typically 50,000 miles. But if the filter becomes clogged with dirt, rust or sediment from the fuel tank, it may have to be replaced sooner. Frequent fuel filter clogging would tell you the fuel tank is being contaminated with outside dirt, or it is rusting like in a steel tank, or is flaking like in an older plastic tank. The fix here may require cleaning or replacing the fuel tank.

A common symptom of a clogged fuel filter is loss of high-speed power caused by a restriction in fuel flow when engine demand is high. If the filter becomes completely blocked, it will starve the engine for fuel causing the engine to die. You can cut open a clogged fuel filter to find out what caused it to clog up.

This video is sponsored by FRAM

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Let's take a trip. It's 1974. You're in Denver, Colorado. You're in your car that has a carburetor, and you're getting ready to go over those rocky mountains to go to California. You've noticed that you're halfway up the mountain, the engine's starting to struggle. You go a little bit further. You notice that you start misfiring and the plugs are fouled. So what's going on here? Well, essentially with this, you have the blue, which represents oxygen, and the red represents fuel, and this is the perfect ratio. But you're taking away this oxygen, and when you take away the oxygen, you should take away the fuel. Carburetor can't do that because it has fixed jets, and the metering stays constant no matter what altitude you're at. This is why certain shops in Colorado specialized in carburetor tuning. Let's fast forward 50 years, and you're in a modern vehicle.

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