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How to Change the Fuel Filter on a 1985 Chevrolet Blazer S-10

The fuel filter installed on a 1985 Chevrolet Blazer provides a checkpoint between the gas tank and the engine, and makes sure that no dirt or damaging particulates get into the engine and cause problems. This filter should be changed every 15,000 miles or so, as the filter can get clogged up over time, and eventually can cause a lean fuel condition. Replacing the filter should take about an hour to do, and only requires basic tools.

Tools Used: Open-end wrench set, Replacement fuel filter

Change the Fuel Filter

Pop the hood. Locate the fuel line running into the side of the carburetor. Hold one wrench on the fuel filter canister and another on the fuel line, then disconnect the fuel line from the canister.

Remove the fuel filter canister from the carburetor, making sure the spring and ball that make up the check valve doesn't fall out of the carburetor. Discard the old filter.

Install a replacement filter into the filter canister, then install the assembly into the carburetor. Install the fuel line onto the canister using a pair of open-end wrenches.

Tips & Warnings

Never smoke or have an open flame nearby while you're working on the fuel system of a vehicle. If you do, you risk causing a fire and damaging yourself and the vehicle.

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