Reducing the pressure in the power supply system Opel Astra H

Warning

The fuel in the Opel Astra car power system is under high pressure, therefore it is forbidden to loosen the fuel line connections while the engine is running or immediately after it has stopped. To carry out work on the repair of the fuel system on a just stopped engine, it is necessary to first reduce the fuel pressure in the fuel system. After 5-6 hours after the engine is stopped, the fuel pressure in the power supply system will drop to almost zero.

1. Place the transmission lever in neutral position and apply the parking brake to the vehicle.

2. Turn off the ignition and open the hood.

3. Disconnect a wire from the minus plug of the storage battery.

4. Remove the cover of the fuse and relay mounting block located in the engine compartment.

5. Remove the fuse (No. 24) of the fuel pump from the mounting block.

6. Connect the wire to the negative terminal of the battery, start the engine and let it run until the fuel rail runs out of fuel. After that, the engine will shut down.

7. Turn off the ignition. Now you can disconnect the fuel lines.

• Source http://www.automnl.com/model/opel_astra_h2/288/