Before attempting to remove any part of the fuel system, refer to the diagrams detailing the procedure for separating a fuel line. This applies to both carbureted and fuel injected vehicles.
REMOVAL & INSTALLATION
Depending on the model year of the car, and which line is being removed, will determine whether the fuel line is connected using a coupler or a standard threaded fitting.
Before attempting to disconnect or remove a fuel line, determine which type of connection is at the end(s) of the fuel line.
- Disconnect the negative battery cable.
- Remove the gas cap to relieve any fuel pressure from the tank. On fuel injected vehicles, properly relieve the fuel system pressure.
- If connected with a standard threaded fitting, using a flare or pickup wrench and an open-ended wrench to loosen the threaded fuel line connection(s).
- If the fuel line is connected with a coupler, refer to the diagram for a detailed explanation of how to install, disconnect and remove the fuel line and tool.
- Place a rag under each fitting to catch any dripping fuel. Remove the fitting completely. Do your best to avoid bending or damaging the fuel lines while you are separating them.
- Clean the end(s) of the line(s) before the installation process. This is particularly important for fuel injected vehicles, because the fuel line diameter for these cars is far smaller than for carbureted vehicles.
- If the fuel lines are installed using couplers, refer to the diagram for a detailed explanation on the connection process.
- If the connection is made using standard threaded fittings, insert the 2 ends together and begin to hand-tighten the nuts. Be careful not to cross-thread the fittings.
- If the lines are connected with a standard threaded fitting, using a flare or pickup wrench and an open-end wrench to tighten the threaded connection(s).
- Start engine and inspect for fuel leaks.