### Fuel System Pressure

#### RELIEVING

##### Except 300ZX

The fuel pump fuse is located in the dash fuse box or in the engine compartment fuse box. Check the lid of the fuse box for exact location.

1. Remove the fuel pump fuse.
2. Start the engine.
3. Start the engine and run until the engine stalls.
4. After the engine stalls, try to restart the engine; if the engine will not start, the fuel pressure has been released.
5. Turn the ignition switch OFF. Reinstall the fuel pump fuse into the fuse block.

   NOTE: Do not crank the engine or turn the ignition switch ON after the fuel pump fuse has been reinstalled, or the fuel pressure will be re-established.

##### 300ZX

The fuel pump relay is located in the drivers side kick panel near the fuse box.

1. Remove the fuel pump relay.
2. Start the engine.
3. The engine should run and then stall when the fuel in the lines is exhausted. When the engine stops, crank the starter a few times for about 5 seconds to make sure all pressure in the fuel lines is released.
4. Turn the ignition OFF and reinstall the fuel pump relay.

   NOTE: Do not crank the engine or turn the ignition switch to the ON position after reinstalling the relay, or fuel pressure will be reestablished.

5. On some models, the Check Engine Light will stay on after test has been completed. This is caused by the computer sensing a open fuel pump circuit. The memory code in the control unit must be erased. To erase the code disconnect the battery cable for 30 seconds then reconnect the cable.