Skip the auto shop - Our mechanics make house calls

How to Buy a Good Quality Fuel Pressure Regulator

Fuel Pressure Regulator

There are all kinds of shapes, styles, and capacities of fuel pressure regulators – from fuel-injected applications to carbureted vehicles and diesel-powered and E-85 engines. The fuel pressure regulator works with the fuel injection system in order to send fuel to the engine to attain efficient combustion.

The fuel pressure regulator is required to be in optimal working condition in order to keep fuel flowing accurately through to the engine, and it is generally located on the fuel rails or near the injectors or injector pod; although there are also in-line regulators available. If you have a vehicle with a return-less fuel system, the fuel pressure regulator will be built into the fuel pump assembly.

  • Generally, a fuel pressure regulator has an internal part that utilizes a spring and a diaphragm for the spring to push against. The pressure on the spring is set by the manufacturer at the optimal pressure to keep the fuel injectors running at top efficiency.

  • The valve attached to the diaphragm opens when pressure exceeds the allowable amount to let fuel move through into the return line, keeping the pressure from becoming too high at the fuel injectors.

  • Fuel pressure regulators are very solid pieces of engineering, and rarely need to be replaced, however you may notice drops in the fuel system pressure, failures to start or poor drivability when your vehicle is idling because the engine does not receive the fuel that it needs to run smoothly.

  • Aftermarket fuel pressure regulators should be every bit as good as OEM (Original Equipment Manufacturer) parts.

  • Depending on your vehicle’s engine layout, you may have to replace the entire fuel sending unit instead of simply the fuel pressure regulator.

  • In-tank and inline fuel regulators are available. If you are not sure which one your vehicle needs, contact a qualified mechanic to learn more and be sure you’re getting the correct part.

While they don’t often fail, when you have problems with your fuel regulator it is very important to get them resolved quickly by replacing the part.

YourMechanic supplies top-quality fuel pressure regulator to our certified mobile technicians. We can also install a fuel pressure regulators that you've purchased. Click here to get a quote for a fuel pressure regulator replacement.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2422 OBD-II Trouble Code: Evaporative Emissions Control System (EVAP) Vent Valve Stuck Closed
Diagnostic Trouble Code (DTC): P2422 P2422 code definition Evaporative Emissions Control System (EVAP)...


Related questions

Q: My fuel gauge is not working properly.

Typically, an improper fuel level reading can be caused by a faulted fuel level sensor. This component is found inside the fuel tank and is likely part of the fuel pump module. Some manufacturers separate the two and others make...

Q: When Should I Have the Fuel System Inspected?

There are many parts to a fuel system but only a few that actually can be inspected visually or otherwise on most vehicles. There are several things you can do to keep your fuel system running smoothly. Try to get...

Q: Not getting fuel from fuel tank replaced fuel pump and filter I have a 85 720 nissan pick up

Hi there. I would recommend checking the fuel pump fuses to be sure the fuel pump is getting power to it. Also, check the ground wire to the fuel pump as well as this is a common issue when they...