GMC 25055083 Filter Pkg, Fuel

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The fuel filter is behind the fuel inlet on the carburetor. Next, disconnect the fuel line from the filter nut, remove the nut, and the filter and spring. For fuel-injected engines, the filters are on the frame rails or rear cross member. Then, depressurize the fuel system, disconnect the battery cable, and remove the filter and O-rings.

In order to separate the fuel line from the carburetor, loosen this connection at the fuel inlet nut. Once you have taken out the fuel inlet nut from your carb, remove this spring and filter. The hole end of the filter should face towards the fuel inlet nut when returning back together with the spring and filter. A fresh gasket must be put on its carb-fuel-inlet-nut before screwing it in place. Lastly, position a wrench with respect to an appropriate torque for a fuel line and lightening connector.

To begin, relieve the fuel system pressure. Fuel injected models have a stainless steel in-line fuel filter, which is located at the left rear of the engine on TBI engines and attached to the cylinder head. On MPFI engines, the fuel filter is connected to the frame rail or rear crossmember near the fuel tank. With the engine cold, place a container or rags under the filter. Remove the lines from the ends of the filter, then take out the attaching bolts and separate the filter. Install the new filter, ensuring it is facing the correct direction. Finally, reverse the steps for installation.

Ensure that the new filter is facing the correct direction.

The fuel inlet filter nut should be unscrewed, being careful not to lose the thin washer-type gasket or the spring located behind the fuel filter.

Use the proper size wrench to hold the nut next to the carburetor body and loosen the nut-fitting at the end of the metal fuel line.