Where is the fuel pressure regulator valve on a 2004cts cadilac 3.6.

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.

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.

SOURCE: fuel pressure regulator had no vacuum line connected

another engineers wet dream. think of it this way . what is normally in the intake when the engine is running.. answer vacume, hence the regulator gets its vacume without a hose connected to it as its already in a full time vacume chamber.no hose required . ps be carefull to seat the regulator and o rings securely into the housing befor you reattach the secureing metal clip.
good luck chris

SOURCE: toomuch fuel pressure. fuel regulator replaced

how do you know it has too much fuel pressure? what is your car doing?

ZJ Limited

• 17989 Answers
• Posted on Apr 29, 2011

SOURCE: how to replace fuel pressure regulating valve

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.

1. Disengage the fuel pressure regulator vacuum hose.

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 prevent system contamination.

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.

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.