I’m replacing the stock fuel pressure regulator in the eclipse with an adjustable one. This will not only let me adjust the base fuel pressure to compensate for higher boost if needed, but will also prevent larger fuel pumps from overrunning the regulator and causing a rich condition. I’m planning to upgrade to a 255 LPH fuel pump from Walbro in the near future, and that’s known to over run the stock fuel pressure regulator. Before I begin, I need to depressurize the fuel system. This will prevent pressurized fuel from spraying everywhere when I begin disconnecting the fuel system. Disconnecting a fuel system component while the fuel system is pressurized risks creating a fire hazard or getting fuel in your eyes. Luckily, depressurizing the fuel system in a 2G DSM is easy to do in four simple steps and only requires a philips head screwdriver.
- Remove the back seat to gain access to the fuel pump cover
- Remove the fuel pump cover
- Remove both connectors from the fuel pump
- Turn the engine over for a few seconds