How to replace the fuel filter on a 1969 Pontiac GTO Judge?

Content verified by Michael G.
July 18, 2025
Want to keep your 1969 Pontiac GTO Judge running at its best? Learn how to change the fuel filter with our simple step-by-step guide. Dive in and get started today!

Replacing the fuel filter on a 1969 Pontiac GTO Judge is an essential maintenance task that helps ensure the engine runs smoothly. Over time, the fuel filter can become clogged with dirt, debris, and contaminants from the fuel, causing reduced performance and potentially leading to engine damage. If you notice symptoms such as poor acceleration, engine misfires, or trouble starting the vehicle, it might be time to replace the fuel filter. Here's how to solve this issue:

Step 1: Gather Necessary Tools and Materials
Before you start, make sure you have the following tools and materials:

  • New fuel filter (specific to 1969 Pontiac GTO Judge)
  • Wrenches (typically 9/16" and 5/8" will be needed)
  • Shop rags or paper towels
  • Safety glasses and gloves
  • A container to catch fuel

Step 2: Locate the Fuel Filter
The fuel filter in a 1969 Pontiac GTO Judge is usually located in the engine bay, near the carburetor. Look for a small, cylindrical metal or plastic canister along the fuel line. It is typically found on the passenger side of the engine, close to the front.

Step 3: Relieve Fuel System Pressure
To avoid any fuel spillage and potential hazards, relieve the pressure in the fuel system. You can do this by either carefully loosening the fuel cap or by disconnecting the fuel pump fuse and starting the engine to allow it to run until it stalls.

Step 4: Disconnect the Fuel Lines
Wear safety gloves and glasses to protect yourself from any fuel that may spill. Use the appropriate-sized wrenches to loosen the fuel line fittings at both ends of the fuel filter. Place a container or rags beneath the filter to catch any fuel that drips out.

Step 5: Remove the Old Fuel Filter
Once the fuel lines are disconnected, remove the old fuel filter from its mounting position. The filter may be secured with a clamp or bracket. Carefully take it out and place it aside.

Step 6: Install the New Fuel Filter
Position the new filter in place of the old one. Ensure the flow direction arrow on the filter points towards the carburetor (away from the fuel tank). Secure the new filter with the clamp or bracket if applicable.

Step 7: Reconnect the Fuel Lines
Carefully reconnect the fuel lines to the new filter, tightening the fittings with your wrenches. Make sure the connections are secure to prevent leaks. Wipe away any spilled fuel with a shop rag or paper towel.

Step 8: Check for Leaks and Test
After everything is connected and tightened, turn the ignition key to the "on" position (without starting the engine) to allow the fuel pump to pressurize the system. Check for any leaks around the filter. If no leaks are found, start the engine and let it idle for a few minutes to ensure proper operation.

Step 9: Dispose of the Old Fuel Filter Appropriately
Dispose of the old fuel filter and any contaminated rags or towels according to your local regulations regarding hazardous waste.

By following these steps, you can successfully replace the fuel filter on your 1969 Pontiac GTO Judge, ensuring continued reliable performance and longevity of your vehicle's engine.

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