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Posted on Apr 29, 2011
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How to replace fuel pressure regulating valve

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ZJ Limited

ZJ Limited

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  • Saturn Master 17,989 Answers
  • Posted on Apr 29, 2011
ZJ Limited
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Joined: Jul 15, 2008
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1991-94 Models - REMOVAL & INSTALLATION

  1. Remove the air intake tube and resonator assembly.
  2. Properly relieve the fuel system pressure.
  3. Remove the bolts from the fuel line clip.
  4. Using a 15 / 16 in. (24mm) backup wrench to prevent damage to the inlet port and bracket, disconnect the fuel inlet and return lines from the pressure regulator/fuel rail assembly.
If difficulty is encountered accessing the fuel return line nut, loosen and/or remove the fuel supply and rail attachment fasteners.
  1. Disengage the fuel pressure regulator vacuum hose.
how to replace fuel pressure regulating valve - zjlimited_1134.jpg

Fig. 6: Disengage the fuel pressure regulator vacuum hose

Fig. 7: Use a suitable wrench to loosen ...

  1. Remove the regulator assembly attaching screw, then remove the regulator assembly. Plug the regulator port in the fuel rail with a clean rag to prhow to replace fuel pressure regulating valve - zjlimited_1136.jpgmination.
zjlimited_1136.jpg

Fig. 8: ... anhow to replace fuel pressure regulating valve - zjlimited_1137.jpging screw from the pressure regulator/fuel rail assembly

zjlimited_1137.jpg

Fig. 9: Remove the fuel pressure regulator assembly from the fuel rail
  1. Do not remove the O-ring from the retainer in the pressure regulator fuel outlet, unless it is damaged and requires replacing. Always remove and discard the O-ring from the fuel inlet.
To install:
  1. Lubricate the new fuel inlet O-ring and, if necessary, the new outlet O-ring with clean engine oil, then install the O-ring(s) in the pressure regulator assembly.
  2. Position the regulator assembly to the fuel rail. Coat the threads of the attaching bolt with Loctite® 242 or an equivalent threadlock, then install the bolt and tighten to 106 inch lbs. (12 Nm).
  3. Connect the fuel pressure regulator vacuum hose.
  4. Connect the fuel inlet and return lines, then tighten the lines to 133 inch lbs. (15 Nm) using a backup wrench to prevent port damage.
  5. Cycle the ignition switch to prime the fuel system, then start the engine and check for fuel leaks.
  6. Turn the ignition OFF and install the air intake tube and resonator assembly.

Hope this helps (remember to rate and comment this answer).

5 Related Answers

psds4

pat murray

  • 293 Answers
  • Posted on Nov 02, 2008

SOURCE: how to replace a fuel pressure regulator

the fuel pressure regulator is on the end of the fuel rail it is held on by a torx screw relieve the fuel pressure using the schrader valve on the fuel rail remove regulator holding screw and replace new regulator be carful not to damage o-rings on new regulator

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Ajkill

Anand Kumar

  • 2035 Answers
  • Posted on Jul 08, 2008

SOURCE: 1997 S-10 fuel line/fuel pressure regulator

Please this link :

http://www.autozone.com/addVehicleId,2336303/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c152800bfe20

Anonymous

  • 57 Answers
  • Posted on Feb 06, 2009

SOURCE: Where is the fuel pressure regulator located at in a 94 bravada

My friend, I suggest you go by your local Auto Parts Store and purchase a Haynes Repair Manual on this vehicle. There are many sensors and electronic controls involved with this engine as I'm sure you already know. Any one of these can memic something that "it is not".
If your problem is the Pressure Regulator, it is located inside the "Tunnel Ram" intake manifold along with the multiport fuel injection system.
Now,,, before I went through the trouble and expense of going into the Intake Manifold, I would run the EMC in Diagnostic Mode and see if there are any codes present.

Anonymous

  • 1118 Answers
  • Posted on Feb 14, 2009

SOURCE: 2000 gmc jimmy wont start fuel pump comes on and cuts off...

When you hook the pressure test guage to shrader valve on fuel rail what it reads is what the pressure is from pump, around 60 p.s.i. all you need to do is hook up the guage and turn on key, you do not have to turn engine over, and if pump is good it will shoot up to 58 or 60 right now.

66 chrgr

mike loshbough

  • 1011 Answers
  • Posted on Mar 22, 2009

SOURCE: 2000 gmc jimmy wont start fuel pump comes on and cuts off...

the fuel pressure if leaking could cause this the regulator is located under the intake plenum but you should smell gas .if you dont then most likely the pump is bad ,the pump will come on for 2 seconds when the key is on then go off it will not stay on with just the key on only when you crank it will it .so have your fuel pressure checked with a gauge.

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