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Fuel Pressure Regulator

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Fuel Pressure Regulator Products

Poor fuel economy, frequent misfiring, stalling, and an increase in exhaust emissions. These are just some of the symptoms of a Fuel Pressure Regulator gone bad. That is why it's important that you keep this component in tiptop shape. You see, by keeping the pressure in your fuel lines constant, this regulator enables the proper flow of fuel into your fuel rails. Fuel then travels from these lines to your injectors, which send a steady supply of fuel to your engine for combustion. So how does this regulator work? What this regulator does is it uses manifold pressure as a gauge when determining the right amount of pressure needed by the fuel lines. When there's too much pressure in the fuel lines, this regulator opens a flap to redirect some fuel back to your fuel tank. That way, no fuel is wasted. When this pressure regulator fails, the function of your entire fuel assembly becomes compromised. And with less fuel reaching your engine, you get less power in your wheels. Your engine also struggles to provide your car with the power it needs to propel forward, making your car more susceptible to misfires, stalling, clogging, and hesitating. So if you're experiencing any of these symptoms, then we suggest you check your Fuel Pressure Regulator for signs of damage. You can find this regulator along your fuel lines, between your fuel tank and engine. And if you find out that this regulator is the source of your engine trouble, then we recommend getting a replacement regulator from Auto Parts Warehouse today!

Buying Guides

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Picking the Right Fuel Pressure Regulator

The fuel pressure regulator, which is between the engine and the fuel tank, does exactly what its name implies. It ensures that the amount of fuel pressure in a vehicle stays at an ideal level. A lot of problems may arise if your fuel pressure regulator isn't in good condition as it won't be able to keep fuel pressure in check. A faulty fuel pressure regulator can lead to abnormally high or low fuel pressure, both of which are bad news for your car. If the fuel pressure is too high, increased emissions, clogging, and misfiring, are some of the complications you may experience. If the fuel pressure is too low, your engine will have a difficulty in starting-if it can at all.

My fuel pressure regulator is broken. What replacement should I get?

When looking for a replacement, an OEM fuel pressure regulator should prove to be a great option. OEM fuel pressure regulators are generally reliable and very durable. They're also surprisingly affordable as regular ones would only set you back by around $30-$60. There are also adjustable variants. An adjustable fuel pressure regulator costs just a little more than a standard regulator. Both types of fuel pressure regulators are very easy to install, so you shouldn't worry about that no matter what type you buy.

Adjustable fuel pressure regulators? What's that?

If you're not into electronic fuel injection (EFI) tuning, you shouldn't bother getting an adjustable fuel pressure regulator as the regular version is more than enough for everyday driving. Adjustable fuel pressure regulators are basically designed for performance boosting purposes. It would be a waste to get one if you don't plan on extensively modifying or tinkering with your ride.

Repair Guides

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Steps in Replacing the Fuel Pressure Regulator

The amount of fuel pressure in an automobile shouldn't be too high. It shouldn't be too low either. Keeping it just right is the way to go. And that's exactly the job of the fuel pressure regulator.

If your fuel pressure regulator is about to give out on you, it'll certainly let you know. Below are some symptoms of a busted regulator:

  • Black tail pipe smoke
  • Blackened spark plugs
  • Fuel leak in the tail pipe
  • Fuel leak in the dipstick
  • A noisy fuel pump
  • Decreased fuel efficiency
  • Engine problems (rough idle, difficulty in starting, among others.)

Difficulty: Easy to Moderate


  • Socket
  • New fuel pressure regulator O-ring (necessary for some automobiles)

Step 1: Start by relieving the fuel pressure in your vehicle. This can be done by opening the fuel cap then taking out the fuel pump relay that's located in the engine's fuse box. After those, start the engine. Keep it running until it stalls, which should only take a few seconds.

Step 2: Disconnect the negative battery cable as well as all the lines and connectors that are attached to your old fuel pressure regulator.

Step 3: If the fuel pressure regulator is held to the engine, remove the bolts that are securing it in place. If the regulator isn't attached to the engine and is part of the fuel pump module instead, remove the upper and lower sections of the module in order to be able to detach the regulator.

Step 4: Once you've taken out your old fuel pressure regulator, put the new one in its place. Depending on your vehicle's make and model, you may need a brand-new fuel pressure regulator O-ring as well to keep the regulator in place. It's important that the new regulator is properly positioned. After securing it, you can re-bolt and reconnect the lines and connectors that you detached earlier.

Step 5: It's now time to re-pressurize your automobile. Reconnect the battery cable and restore the fuel pump relay to the way it was before. Don't forget to close the fuel cap as well. Afterwards, turn on your engine. Keep it on for several seconds then turn it off again. Repeat that a few times.

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