Buick 25055458 Strainer,Fuel

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In all make and models of cars manufactured by GM the fuel filter is installed inside the fuel inlet to the carburetor and can either be pleated papers for later designs or bronze for earlier designs and cannot be cleaned for reuse. This job should be done when the engine is cold after 3 hours of idling and OR wrenches for the fuel line nuts and flare nut wrench if available, another filter for the car and engine and few clean rags. The first step is to take out the air cleaner assembly, and take note or mark those vacuum hoses that should be disconnected so that they can be reattached later. Trace the fuel hose from the fuel pump, position at the low right front of the engine, to the carburetor, which is usually connected by metal line. While disconnecting the fuel line, lay piece of rags under the fuel inlet fittings to any fuel spillage. Using the right size wrench, and standing the nut beside the carburetor body, turn the nut-fitting and the end of the fuel metal line.It is important in this process to ensure that the larger nut does not slip from your hand. Just after disconnecting the fuel line, it should be slid slightly aside in order not to crimp it while gaining access to the inlet filter nut. Slowly unscrew the fuel inlet filter nut without loosing the small thin washer-type gasket and the spring located behind the filter to be careful on the filter installation. Measure the old filter with the new one to find out which is longer before comparing the design of the two filters then fix the spring onto the carburetor body after ascertaining whether the spring has any sign of damage. Place the new filter trailing the spring, it may be installed in the correct direction for the bronze or paper filter. replace the washer-type gasket using the fuel inlet filter nut and screw it firmly onto the carburetor but not too roughly thus causing stripping or leading to the leakage of fuel. While attaching the fuel inlet nut, use a wrench to hold the nut tightly while connecting the fuel line, this is because one is usually in a very tight place and may end up cross threading. Attach a clip to the vacuum hose that leads to the air cleaner snorkel motor to enable the running of the engine and look for any signs of leakage. Wherever there are signs of leakage at the fuel line connector, make sure you remove the connector and check if the threads for the line are worn out or stripped and if so you change the line, if not then thread sealing tape is used. Last of all, reconnect all hoses to their designed positions and refit the air cleaner assembly back into position.

The fuel filter on carbureted gasoline engines is located behind the fuel inlet connection on the carburetor body.

A new washer-type gasket is installed on the fuel inlet filter nut and tightened securely. The fuel line is then reconnected, and the engine started to check for leaks.