How to replace the fuel filter on a 1970 Dodge Challenger R/T?

Content verified by Michael G.
July 18, 2025
Discover how to swap out the fuel filter on your 1970 Dodge Challenger R/T with ease using our simple, step-by-step guide. Check out our Car Guide for smooth and stress-free fuel filter maintenance!

Replacing the fuel filter on a 1970 Dodge Challenger R/T is an essential maintenance task to ensure your classic muscle car continues to run smoothly. Over time, the fuel filter can become clogged with debris, leading to reduced engine performance and potential fuel delivery issues. If you notice your Challenger is hesitating during acceleration, experiencing a drop in power, or even stalling, it could be a sign that the fuel filter needs to be replaced. To address this issue, follow these steps:

Step 1: Ensure Safety First

Before you begin, make sure the car is parked on a flat surface and the engine is cool to avoid any potential burns or accidents. Disconnect the battery to prevent any electrical sparks which could ignite fuel vapors.

Step 2: Locate the Fuel Filter

On the 1970 Dodge Challenger R/T, the fuel filter is typically located along the fuel line on the driver’s side of the engine bay. It is a small, cylindrical component, often made of metal or clear plastic, attached to the fuel line between the fuel pump and carburetor.

Step 3: Relieve Fuel Pressure

Before removing the fuel filter, you need to relieve the fuel system pressure to prevent fuel from spraying out. You can do this by loosening the gas cap which will help release any built-up pressure in the fuel system.

Step 4: Remove the Old Fuel Filter

Using a wrench or pliers, carefully remove the clamps that hold the fuel lines to the fuel filter. Be prepared for a small amount of fuel to spill out, so have a rag or container ready to catch it. Once the clamps are removed, pull the fuel lines off the filter. Next, remove the filter from its bracket or holder.

Step 5: Install the New Fuel Filter

Take your new fuel filter and ensure it is oriented correctly. Most fuel filters will have an arrow indicating the direction of fuel flow. This arrow should point towards the carburetor. Attach the fuel filter to the fuel lines and secure it with the clamps. Ensure the connections are tight to prevent any fuel leakage.

Step 6: Reconnect the Battery and Test

Once the new fuel filter is securely in place, reconnect the battery. Start the engine and check for any leaks around the fuel filter. If there are no leaks, take the car for a short test drive to ensure it is running smoothly.

Conclusion

Replacing the fuel filter on your 1970 Dodge Challenger R/T is a straightforward process that can significantly improve your vehicle’s performance. By following these detailed steps, you can ensure your classic car remains in top condition, providing you with a smooth and enjoyable driving experience.

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