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Mountain Main · 06-11-2003, 11:59 PM

I put an Adjustable Fuel Pressure regulator in 5.0 Mustangs a couple of times. These are the things I suggest to make it easy and so you won't lose the allen wrinch bolts.

I would order gaskets that go on throttle body and the other side of the EGR spacer. Last time I checked I spent 15 dollars at Napa for them. I'm assuming that you already have the new fuel pressure regulator, gasket and O rings.

This is how I would start.

1. Take the negative battery cable off the battery and remove the gas cap to releave pressure.
2. Take off the plumbing that goes in between the MASS AIR FLOW and throttle body.
3. Remove the four nuts to the throttle body and disconnect linkage.
4. Remove EGR
5. To remove EGR spacer I double the nut the to the studs that are going into the spacer. I used a wrench and untighten the nut that is closest to the egr spacer. This allows me to back the studs out. I had trouble with one threaded stud so I rotated the whole spacer.

6. When removing the EGR spacer this gives plenty of room for access to the regulator. I was able to save time by taking this all apart.

7. There are three allen wench bolts on the fuel pressure regulator. Undo all of them. I used an allen wrench socket that goes into my 3/8 rachet. It worked better with a socket allen wrench . A regular allen wrench will work also.

8. Install is reversed. Tighten the three allen wrench stud evenly and use the new gaskets that goes on both sides of the EGR spacer. I used never seize on the studs when putting them back into the intake manifold.

06-11-2003, 11:59 PM	#3
Mountain Main Registered Member Join Date: Feb 2003 Location: Minturn, CO 81645 Posts: 109	Fuel Pressure Regulator I put an Adjustable Fuel Pressure regulator in 5.0 Mustangs a couple of times. These are the things I suggest to make it easy and so you won't lose the allen wrinch bolts. I would order gaskets that go on throttle body and the other side of the EGR spacer. Last time I checked I spent 15 dollars at Napa for them. I'm assuming that you already have the new fuel pressure regulator, gasket and O rings. This is how I would start. 1. Take the negative battery cable off the battery and remove the gas cap to releave pressure. 2. Take off the plumbing that goes in between the MASS AIR FLOW and throttle body. 3. Remove the four nuts to the throttle body and disconnect linkage. 4. Remove EGR 5. To remove EGR spacer I double the nut the to the studs that are going into the spacer. I used a wrench and untighten the nut that is closest to the egr spacer. This allows me to back the studs out. I had trouble with one threaded stud so I rotated the whole spacer. 6. When removing the EGR spacer this gives plenty of room for access to the regulator. I was able to save time by taking this all apart. 7. There are three allen wench bolts on the fuel pressure regulator. Undo all of them. I used an allen wrench socket that goes into my 3/8 rachet. It worked better with a socket allen wrench . A regular allen wrench will work also. 8. Install is reversed. Tighten the three allen wrench stud evenly and use the new gaskets that goes on both sides of the EGR spacer. I used never seize on the studs when putting them back into the intake manifold.