An electric fuel pump can improve the performance of an engine. Working on fuel lines requires proper preparation to prevent spills and leaks. A simple wiring mistake, such as reversing the positive and negative wires, can create an instant and devastating fire. With this in mind, this type of modification should only be done by an experienced mechanic. The installation doesn't take long and only requires basic mechanic's tools.
- Skill level:
Things you need
- Safety glasses
- Wrench kit
- Screwdriver kit
- Catch pan
Put on safety glasses. Disconnect the black negative lead followed by the red positive lead from the battery with a wrench then set them aside where they cannot touch anything metal.
Locate the carburettor, which is bolted to the intake manifold on the engine and will have an air filter mounted on it. Identify the fuel line feeding into the carburettor from the fuel tank. Place a catch pan under the fuel line connections and disconnect the fuel line feeding into the carburettor from the fuel tank with a screwdriver to loosen its clamp.
Look for the connection on the electric fuel pump marked "In." Connect the fuel line from the tank to the "In" connection on the fuel pump with a screwdriver to secure the hose clamps. Connect a short section of fuel line from the other connection on the fuel pump (marked "Out") to the carburettor with the screwdriver to secure the hose clamps.
Locate the electric wires on the fuel pump. Identify the positive wire (most likely red) and run it to the fuse panel mounted near the battery. Identify the negative wire on the fuel pump (most likely black) and run it to the vehicle's ground terminal strip mounted on a metal part of the vehicle, usually the firewall and fairly close to the battery.
Identify a vacant 30-amp power terminal on the fuse panel that is controlled by the vehicle's ignition switch. Plug the positive wire into it with the spade clip provided with the wire. Locate a vacant ground terminal on the ground strip and plug the negative wire into it with the spade clip provided with the wire.
Check that all fuel lines are snug and correctly placed. Verify that all electrical connections are properly secured and plugged in tightly. Reconnect the positive red lead at the battery then the negative black lead.
Tips and warnings
- Clean up any gasoline spills immediately.
- Do not work around heaters or open flames.
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