How to Remove Fuel Line Fittings


There are three commonly used fuel fittings on late model vehicles. Two of the fittings use an expandable piece to hold the fuel line end secure, and the third uses a threaded connector. Before removing a fuel line, it is necessary to depressurize the system. Fuel lines carry far more pressure with fuel injection than the older carburetor-based fuel lines.

Things You'll Need

  • Set of wrenches
  • Spring lock separator tools
  • Set of pliers
  • Install the spring lock remover tool onto the fuel line with the long end of the tool that fits over the fuel line facing toward the spring lock. Push the tool, forcing the end to slide under the spring and expanding it sufficiently to allow the other end of the fuel line to be pulled out of the spring lock.

  • Remove the white plastic insert snap-locks by depressing the two plastic tabs that protrude through openings in the plastic end of the fuel line. When inspecting the fuel line connection, one side of the connector will be black plastic with square openings. On the inside of the connection, a white plastic snap with tabs can be seen. The tabs can be seen protruding through the openings. These tabs must be squeezed in so as to raise the locking end of the snap enough to clear the raised lip of the opposite fuel line end. Use the pliers to squeeze the upper and lower tab simultaneously and the opposite fuel line can be pulled out.

  • Remove the threaded connection fuel line with two wrenches. One wrench holds the male-threaded section while another wrench is used to unscrew the female end of the fuel line connection.

Tips & Warnings

  • Removing spring lock fittings requires a special tool to release the spring lock. There are generally only three sizes of fuel lines being used with spring locks. A spring-lock fuel line can be identified by a round housing around one end of the fuel line that houses a circular spring. The other end of the line is straight with only a defining raised lip--approximately ½ inch from the end. When the two are pushed together, the spring expands to allow the lip on the other end of the line to pass, and then springs back to a tighter position. This locks the two in place.

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