Hello
I have a 1991 E250, fuel injected with a 351. I am asking what the steps are for replacing the Fuel pressure regulator.
Thank you for any help
Seasons Greetings to all.

 

Sorry no one's replied yet---could be the frequent visitors here don't have any advice to share---that happens from time-to-time.

I'd post this in one of the sub-forums under Performance, Engines & Troubleshooting---someone there should be familiar with your engine and fuel system, especially what's involved with replacing the FPR.

HTH

 

Wouldnt it be the same engine as a E150 around the same years if its a 351?

If so pull the doghouse and the FPR is right there. I would pickup a haynes manual, Helps with some of the basic stuff. I plan on doing mine soon and will post when done. Scroll down in the following link.

https://www.ford-trucks.com/forums/1...o-start-2.html

 

First, depressurize the system.
This is the two methods I have used: While the van is idling, remove the fuse to the fuel pump. The van will stall and you are good to go.
Another method: While van is off, remove the fuse to fuel pump, start the truck, the truck will run for a few seconds and will shut off.

Second, proceed to remove the old fuel pressure regulator.
Remove vacuum hose, use an allen wrench two remove the two bolts, gently wiggle FPR to get it out. Have a rag ready as some fuel will spill while removing FPR. Make sure the two old rubber rings are out of fuel rail.

To install the new FPR: coat new rubber rings with clean motor oil before installing them on FPR. Place the regulator on the fuel rail and press it down until it sits nice and flat. Use the new bolts provided in your kit and finger guide them to avoid cross threading them. Once you can no longer finger tight bolts use allen wrench. I am not sure what are the torque specs for those two bolts but when I did it I just went by feeling.
Re-connect vacuum hose to FPG.

Put the fuse you removed earlier back in the fuse block. Turn key on but don't start the engine( this will pressurize the system). You will hear fuel pump priming. Turn key to off. Do the same steps again one more time.
At the third time, go ahead and start the engine. The engine should start. Check for fuel leaks.

Good luck.

FYI. I did this project on my 94,E350 this summer. I used a Motorcraft FPG.
I did fuel filter at the same time.

 

Remove dog house, remove cap from the schraeder valve (looks like a tire filler valve) relieve the pressure by depressing the center of the valve (wear safety glasses) remove the vacuum hose from the regulator, unscrew the two screws holding the old regulator on. remove the regulator. install the new regulator, lubricating the O rings first. replace the vacuum hose. Ok, you're done. Once you relieve the pressure, should be little to no fuel comes out when you remove the regulator.

 

I just did mine an hour ago. handyal and baddad covered it, The only things I have to add is have rags

around the schrader valve and the FPR because fuel comes out of both and.......... its actually more work to

remove and replace the engine cover than it is to replace the FPR.

One more thing, be careful when installing the allen head screws, they have very fine threads on them.