Fuel Pressure Regulators
What is a fuel pressure regulator?
Fuel Pressure Regulators are typically located on or near your firewall and attached to your metal fuel line tubing, or on the fuel rail itself. The fuel pressure regulator is a spring operated valve that will open if it feels the excessive vacuum forces of too much fuel pressure in the lines. It then allows excess fuel to run into a reservoir where it will be safe and reduce the pressure in the lines. The fuel pressure regulator is responsible for keeping your fuel lines at a constant pressure rating while also preventing the use of too much fuel during acceleration, deceleration, and other emission heavy operations.
What can go wrong with a fuel pressure regulator?
Because of the Fuel Pressure Regulators simple design and dependence on vacuum forces, the fuel pressure regulator does not frequently have problems. If a problem does occur within the regulator, it will involve the spring valve and may mean that it can’t close because of a clog, a worn spring, or maybe a leak due to corrosion. Other closely related fuel pressure gauge problems would be a clog or leak in the lines attached that impeded the flow of fuel or vacuum pressure through the lines.
How will I know there is a problem with my fuel pressure regulator?
You will know there is a problem with your fuel pressure regulator from several noticeable symptoms. There will most likely be hesitation during acceleration, excessive load up during deceleration which may cause backfiring or emission odor, and you may even experience a choking sensation like the fuel or air is being completely cut off from the motor at times. Some vehicles may give you a warning light or trouble code to identify the problem.