When to replace the fuel pressure regulator on a Chevy Silverado?

If your Silverado’s engine is stalling and displaying the symptoms below, the fuel pressure regulator might have gone bad. So if your truck’s regulator is in need of a replacement, follow these steps to learn how to do it yourself. This article applies to the Chevrolet Silverado GMT800 (1999-2006).

Where is the fuel pressure regulator on a 1999 suburban?

Walk over to the passenger’s side of the truck. Face the engine so that you are looking toward the driver’s side. Peer across the top of your Suburban’s engine. From the top, center of the engine, less than one foot down on each side, you should see two metal tubes.

Can a failed fuel pump cause a failed pressure regulator?

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Where is the fuel pressure regulator on a car?

Most modern vehicles have the fuel pressure regulator mounted on the fuel rail. Some may be in the fuel pump assembly, but this is rarely the case (although it is happening more and more).

Can a bad fuel pressure regulator cause a fuel leak?

As seals crack, fuel tends to leak. Problems with the fuel pressure regulator are not the only reasons why you may have a leak in the fuel delivery system. It can be because of corrosion, the presence of contaminants, and problems in the fuel filter. Sometimes, faulty electrical connections can also lead to fuel leaks.

How do you change the fuel in a Chevy Silverado?

Place shop rags underneath the regulator as a little bit of fuel will spill out. To remove the regulator, firmly hold onto it from both sides and pull it back. It should pop right out. Figure 3. Fuel pressure regulator removed. Use needle nose pliers to remove the O-ring seated inside of the regulator port.

Are there any Chevy fuel pumps left in stock?

Only 7 left in stock – order soon. . Only 6 left in stock – order soon. . Only 15 left in stock – order soon. . Only 7 left in stock – order soon.

What makes a Chevy Silverado run so well?

The fuel pressure regulator in your Silverdo’s engine regulates the amount of fuel entering the fuel injectors. There’s a very specific air/fuel ratio that allows the engine to run properly. Too much fuel causes the engine to run rich, and too little fuel causes the engine to run lean.

What are the symptoms of a faulty fuel pressure regulator?

Symptoms of a faulty fuel pressure regulator include engine misfires, stalling at idle, spark plugs electrodes turning black, and gas dripping out the exhaust or in the regulator vacuum line. Replace the regulator as soon as it fails because gasoline may get into the oil system,…

What happens if there is too much fuel in the engine?

Too much fuel causes the engine to run rich, and too little fuel causes the engine to run lean. Symptoms of a faulty fuel pressure regulator include engine misfires, stalling at idle, spark plugs electrodes turning black, and gas dripping out the exhaust or in the regulator vacuum line.

What should fuel pressure be on GM 4.3L Vortec?

You can find this tutorial in Spanish here: Cómo Probar La Bomba de Combustible (GM 4.3L, 5.0L, 5.7L) (at: autotecnico-online.com ). The fuel system in your 4.3L, 5.0L, or 5.7L Vortec engine needs at least 50 PSI of fuel pressure to start.

How to change the fuel pressure in a Chevy Silverado?

The new regulator should come with new O-rings and a new metal screen. Figure 6. New fuel pressure regulator. Push the new regulator into place, and make sure the vacuum line port is facing up. Re-install the regulator clamp. Then reattach the vacuum line to the port on the regulator. Figure 7. New fuel pressure regulator installed.

What should the fuel pump pressure be to start the engine?

The fuel pump produces much more than just 50 PSI of course but the bare minimum the engine needs to start is 50 PSI. Anything less and it will crank for ever before it starts or not start at all. So, the very first thing you need to do is to verify that the fuel pump is delivering at least 50 PSI of fuel pressure while the engine is cranking.

How to check for fuel leaks in a GM 4.3L?

Once the fuel pressure gauge registers pressure, check for fuel leaks around the Schrader valve. It’s very important that NO fuel leaks are present for the accuracy of the test. Once you have verified no fuel leaks, continue to the next step. Have your assistant crank the engine as you eyeball the fuel pressure gauge.

What happens when the fuel pressure regulator goes bad?

Fuel is the lifeblood of a vehicle’s engine. It is mixed together with air to produce energy that drives the car. There are many components of the fuel delivery system. Malfunction in any of these components can result to problems in fuel delivery. One of the most critical components is the fuel pressure regulator.

Can a fuel pressure regulator leak into the vacuum hose?

Presence of Fuel in the Car’s Vacuum Hose. One of the fuel pressure regulator symptoms that one should never ignore is the presence of fuel in the vehicle’s vacuum hose. This is an automotive component that connects to one side of the fuel pressure regulator. If there is a problem with the regulator, fuel can leak into the vacuum hose.

Where is the fuel pressure regulator on a Chevy Silverado?

Allow the truck’s engine to fully cool down before working under the hood. The fuel pressure regulator is located on the driver’s side of the engine. Disconnect the vacuum line on top of the regulator by firmly pulling it up and off. Figure 1. Pull on vacuum line located on top of the fuel pressure regulator.

How do you replace a fuel pressure regulator?

Use a pair of screwdrivers to aid in the removal of the retaining clip. Pull the fuel pressure regulator out of the fuel rail assembly. Remove the O-rings and filter screen from the fuel rail assembly. Discard the old fuel pressure regulator, O-rings and filter screen.

Where is the fuel pump regulator on a GMC Sierra?

( I got that pic from the web). Im sure ours are in the top of the fuel pump since gm has two type of fuel system, the return and the return-less. The difference is in the fuel pressure regulator, either mounted on the fuel rail (see pic) or on top of the fuel pump.

How to remove fuel pressure regulator from Chevy Silverado?

To remove the regulator, firmly hold onto it from both sides and pull it back. It should pop right out. Figure 3. Fuel pressure regulator removed. Use needle nose pliers to remove the O-ring seated inside of the regulator port. Then use the pliers to remove the metal regulator screen.

How do you replace the fuel pump in a Chevy Silverado?

Pull the quick release tabs off of the old fuel lines and put them onto the nipples of the new fuel pump. Reconnect the three fuel lines to the quick connect tabs. If you have to swap out the wiring harness, make sure that you do not cut into the wires for the fuel pressure sensor.

Can a bad fuel regulator cause a problem?

A bad fuel pressure regulator can cause all sorts of problems. Most modern vehicles have the fuel pressure regulator mounted on the fuel rail. Some may be in the fuel pump assembly, but this is rarely the case (although it is happening more and more).

What to do if your Chevy Silverado is leaking fuel?

Pull on vacuum line located on top of the fuel pressure regulator. Fuel leaking out of the vacuum line is an indicator that the fuel pressure regulator is not functioning. Slightly pry out the regulator clamp with a flat head screwdriver. Use your hand to pull up on the clamp and remove it from the regulator. Figure 2. Pry out the regulator clamp.

How do you replace a fuel pump regulator?

Make sure the retaining clip snaps over the outer ring of the fuel pressure regulator. Reconnect the negative battery cable, replace the fuel pump relay and tighten the fuel filler cap.