There are three types of fuel filters; internal (in the carburetor fitting), inline (in the fuel line) and in-tank (the sock on the fuel pickup tube).
REMOVAL & INSTALLATION
The carburetor inlet fuel filter should be replaced every 12,000 miles (15,000 miles for 1975-78 cars) or more often if necessary.
- Disconnect the negative battery cable. Disconnect the fuel line connection at the fuel inlet filter nut on the carburetor.
- Remove the fuel inlet filter from the carburetor.
- Remove the filter and the spring.
If a check valve is not present with the filter, one must be installed when the filter is replaced.
- Install the spring, filter and check valve (must face the fuel line), then reverse the removal procedures.
- Start the engine and check for leaks.
FUEL PRESSURE RELEASE
To release the fuel pressure on the carbureted system, remove and replace the fuel tank cap.