Mechanics

FUEL PRESSURE REGULATOR

1997 GMC Sierra

Engine Mechanical problem
1997 GMC Sierra V8 Two Wheel Drive Automatic 142000 miles

Hi, I'm about ready to change the fuel pressure regulator. In my chilton repair manual it says that there is a vacuum line connected to the fuel pressure regulator, but there wasn't a vacuum line connected to it when I pulled the upper plastic manifold cover off. Is a vacuum line supposed to connect to the fuel pressure regulator on this vortec 350?
AD
Avatar
Markh97gmc
November 4, 2008.



Hello – I need more specifics on your vehicle to better assist you – is it a C1500 or C2500 or? What are the exact Liter size of your engine and the 8th digit of your VIN.

Thank you very much for the donation.

Find a car repair manual for your car repair questions.

ImpalaSS
Nov 4, 2008.
My truck is a C1500 with a 5.7 liter V8. The 8th digit of my VIN number is the letter R.

Tiny
Markh97gmc
Nov 5, 2008.
Hello – sorry you are having problems with your vehicle.

According to the attached information – as you see, yes a vacuum hose is supposed to be connected. You can see the hose hook up on the attached diagrams. Also, I attached the directions and it states the same.

Thank you very much for the donation.

Find a car repair manual for your car repair questions.


http://www.2carpros.com/forum/automotive_pictures/248015_58885441_1.jpg




http://www.2carpros.com/forum/automotive_pictures/248015_2_18.gif




http://www.2carpros.com/forum/automotive_pictures/248015_3_15.jpg



REMOVAL PROCEDURE

Disconnect the negative battery cable.
Relieve fuel system pressure. Refer to Fuel Pressure Release Procedure .
Remove the upper manifold assembly. Refer to Engine Mechanical .
DISASSEMBLE PROCEDURE

Disassemble the fuel pressure regulator snap ring retainer.
Disassemble the regulator assembly and the O-rings.
Discard the O-rings. NOTE : If the fuel pressure regulator is to be reinstalled, inspect the filter screen (if equipped) for contamination. If contaminated, remove. Discard the filter screen.
ASSEMBLE PROCEDURE

Lubricate the new O-rings with clean engine oil.
Install as an assembly, backup O-ring, large O-ring, filter and small O-ring.
Assemble the regulator with vacuum tube pointing down and snap ring retainer.
INSTALLATION PROCEDURE

Install the upper manifold assembly. Refer to Engine Mechanical .
Disconnect the negative battery cable.
AD

ImpalaSS
Nov 5, 2008.

AD