Where is the fuel pressure regulator location?

The fuel pressure regulator is at the top of the fuel pump combined with fuel filter mounted in fuel pump module in fuel tank. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

The regulator on this vehicle located on the pump in the tank. I included the info on this for your review.

However, before you condemn this, I would suggest testing the pressure using this guide.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please run through this info and let us know what you find with this. Thanks

Use a gage and check fuel pressure. The pressure regulator is on the return side. Restricts fuel flow till proper pressure is reached. 39 psi. From the pressure regulator, the fuel should go to the tank. If fuel pressure is ok, check for injector pulse. Any applicable mil codes? You can check those yourself.

Thanks for visiting 2CarPros.

The regulator is located on the end of the fuel rail and held on via a snap ring. I'll post some pictures below.

It sounds like you may have low fuel pressure. With the key on and engine not running you should have 31psi. With the engine running and vacuum line to regulator plugged it should be 39psi minimum at idle.

WARNING: The fuel system is under constant pressure, even when the engine is OFF. Always release fuel pressure before servicing any fuel system component.

REMOVAL

1. Release fuel system pressure.
2. Disconnect negative battery cable, and remove air cleaner assembly.
3. Disconnect vacuum hose from throttle body.
4. Using snap ring pliers, remove snap ring and pressure regulator.
5. Remove O-rings from regulator.

INSTALLATION

1. Install new O-rings on regulator.
2. Push regulator into fuel rail, with vacuum nipple pointed straight up.
3. Install snap ring.
4. Connect vacuum hose to regulator.
5. Connect negative battery cable, start engine and check for leaks.
6. Install air cleaner assembly.

I have seen low pressure cause backfiring. I would check pressure with a gauge. Most parts stores have them in their loan a tool program.

Hi:
With the vacuum removed from the regulator, your pump should produce around 39PSI with the vacuum attached to the regulator, it should be 31PSI. Check it with the regulator disconnected. If it doesn't produce close to 39PSI, the pump is bad. If you plan to replace it yourself, the easiest way is to just take the 8 bolts holding the bed to the frame out and lift off the bed. Removing the tank can be a pain and will take much longer and potentially lead to other problems (broken straps, cracked plastic tank.)

Let me know what you find.
Joe

When distributor signal is not present while cranking ASD relay turns off power to electric fuel pump ,injectors and coil. Here is how you test the regulator and pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please run down this guide and report back.