### Relieving Fuel System Pressure

The fuel pressure must be released on fuel injected models before removing the any fuel related component. To relieve the fuel pressure remove the gas cap then remove/disconnect the fuel pump fuse, fuel pump relay or electrical fuel pump connection to disable the electrical fuel pump. Refer to the illustrations in this section and in Section 1.

Start the engine and run, after the engine stalls crank the engine a couple times to release pressure. Turn ignition switch OFF and install/connect fuse, relay or electrical connection to fuel pump.

On some late models the "Check Engine Light'' will stay on after installation of the fuel component is completed. The memory code in the control unit must be erased. To erase the code, disconnect the battery cable for 1 minute, then reconnect after installation of fuel component.

Fig. 1: Fuel pump relay — 1982 200SX

Fig. 2: Access plate and fuel pump electrical connection location — 1984–88 200SX

Fig. 3: Unplug the electrical connection to release the fuel pressure 1984 and later 200SX

Fig. 4: Removing the fuel pump fuse 1987 Stanza

Fig. 5: Fuel pump fuse location — 240SX