Fuel Pressure Regulator

The fuel pressure regulator is a diaphragm operated pressure relief valve. To maintain precise fuel metering, the fuel pressure regulator maintains a constant pressure differential across the fuel injector. This means that the pressure in the fuel rail will always be at a constant value above manifold absolute pressure.

The specified pressure differential is either 36 PSI (2.55 kg/CM2) or 41 PSI (2.90 kg/CM2) depending on engine application.* Maintenance of this pressure differential is accomplished by balancing a spring, assisted by manifold pressure, against a diaphragm which holds a ball valve on its seat.

Simple Car Care Tips and Advice

Simple Car Care Tips and Advice

Put an End to All Your Car Troubles. Does Your Car Break Down Often? Are You Spending More On Fuel Than You Thought You Would? Is Maintaining Your Car Eating Into Your Budget? Make Your Car Last Longer with Some Simple Do It Yourself Tips.

Get My Free Ebook


  • roisin
    How to change toyota prius 2007 fuel pressure regulator?
    3 years ago
  • vanna
    How to change fuel pressure regulator on 2001 toyota tacoma?
    3 years ago
  • milly
    3 years ago
  • marguerite cahill
    How to remove fuel pressure regulator on toyota rava4?
    2 years ago
  • NEA
    How to adjust the fuel pressure regulator 2002 avalon?
    7 months ago
  • itala
    How to replace 2007 toyota camry fuel pressure regulator?
    4 months ago

Post a comment