How to Reduce the Fuel Pressure in a Car

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    • 1). Locate the rubber fuel hose that runs from the fuel pump to the carburetor. Find a safe spot along the hose where you can install the regulator. Cut the fuel hose with a razor blade at this spot.

    • 2). Install the proper size hose fittings in each end of the pressure regulator. They will be in the kit.

    • 3). Place a hose clamp over each end of the fuel hose. Push the hose ends onto the fittings on the regulator. Be sure to note the flow direction indicated by an arrow on the regulator. The arrow points towards the carburetor.

    • 4). Tighten the hose clamps. Set the regulator for two pounds of pressure by pushing down on the knob in the center of the regulator and turning the pointer to the number "2." Start the vehicle and check for leaks.

    • 5). Test drive the vehicle to make sure there is adequate pressure to run it on the road. If the vehicle hesitates or stalls, increase the pressure by 1/2-pound until it doesn't hesitate.

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