If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for input of the equipment in action!
3a. Disconnect vacuum and fuel hoses from pressure regulator, then turn out fixing bolts (Civic).
3b. Fixing bolts (Integra).
4. Remove pressure regulator. 5. Installation is made upside-down. Do not forget to replace a sealing ring which before installation should be oiled slightly pure motive. 6. Check the engine for existence of signs of leak of fuel.