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How to Drop a Gas Tank on a 1969 Chevrolet Chevelle

Compared to the fuel tanks used in cars today, the 1969 Chevelle's tank is simple in design. Whereas modern fuel tanks uses a rubber bladder as a safety device, and typically contain the fuel pump, the Chevelle's fuel tank contains neither. Due to age of the factory-installed fuel tanks, the 1969 Chevelle's tank commonly contains flakes of rust and other contaminants. This debris can easily damage the carburetor and clog the fuel lines. Fortunately, replacement tanks are readily available for a reasonable price, but before one can be installed, the existing tank must first be removed.

Tools Used: Screwdriver, Jack, 9/16-inch socket wrench

Drop a Gas Tank

Drive the Chevelle or allow it to idle until its fuel level is low. Lowering the fuel level will reduce the weight of the tank, making it easier to remove.

Slacken the fuel line's securing clamp with a screwdriver, then pull the line off of the metal fitting on the bottom of the tank.

Position a jack underneath the fuel tank, then raise the jack until it presses against the tank. The jack is necessary to hold the tank in place as the tank's mounting straps are removed.

Remove the two mounting straps that secure the fuel tank to the underside of the Chevelle. Each strap features a single bolt at each end. Remove all 4 bolts with a 9/16-inch socket wrench, then pull the straps away from the tank.

Lower the license plate and remove the gas cap from the filler tube.

Lower the fuel tank slowly with the floor jack. As the tank is lowered, slowly guide the tank toward the front of the carwith the jack until the filler pipe at the rear of the tank slides out of its housing behind the license plate.

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