Question about 1997 Dodge Ram 2500 Club Cab

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Rail pressure where to get rail pressure on a 1997 B-9 engine, Cummings

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  • membrane May 11, 2010

    Ahhh lots of Horse Power, Injector Upgrades getting you down? Need more pressure at the rails? Is that the question? An upgraded high pressure oil pump may be in order ... if your asking how to check what the current pressure is ... I have no clue. I was just looking into power upgrades and rail pressure would have been a problem without the upgraded high pressure oil pump.

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You will need a fluid filled gauge capable of reading 250 psi it can be installed in the rail plug on the shutdown solenoid.
In order to get an accurate reading it may have to be on a dyno.
good luck

Posted on Dec 06, 2008

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Where is the fuel sensor on a 1997 jeep grand cherokee


Have you checked the fuel filter? I would pull the fuel line apart before the filter to see if the pump is putting gas into the line. With key on, the pump should run for 2 seconds to pressurize the lines and fuel rail. And when the engine is cranking over, the pump should be running constant and putting gas into the line. If gas shoots out, possibly the filter is clogged or the fuel pressure regulator on the fuel rail is defective. If no gas comes out, possibly the pump filter sock is clogged or the pump is defective.
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How to change a fuel pressure regulator in a 1997 pontiac grand prix


GM Century/Lumina/Grand Prix/Intrigue 1997-2000
Fuel Pressure Regulator - Removal & Installing

The fuel pressure regulator is a diaphragm-operated relief valve with fuel pump pressure on one side and regulator spring pressure and intake manifold vacuum on the other side. The regulator's function is to maintain a constant fuel pressure across the injectors at all times. The pressure regulator compensates for engine load by increasing fuel pressure as engine vacuum drops.

The fuel pressure regulator is serviced as a separate component. When servicing the pressure regulator, make sure that the O-ring back-up, large O-ring, filter screen and small O-ring are properly positioned on the pressure regulator.


44dcbf8.jpg Fig. Cutaway view of a typical fuel pressure regulator


REMOVAL & INSTALLATION
The need to work as cleanly as possible cannot be over-emphasized. Even the smallest amount of dirt, if allowed into the fuel pressure regulator and/or the fuel rail, will find its way to the fuel injectors. The nozzle openings of the injectors are very small. Keep hands and tools clean. Clean the areas to be disconnected with a suitable solvent. Carefully cover open fittings and connections to keep out foreign material. Dirt in the injectors almost guarantees a clogged fuel injector and engine performance problems.
3.1L and 3.4L (VIN E) Engines
  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure using the procedures found in this section.
  3. Remove the upper intake manifold assembly. Please see .
  4. Disconnect the vacuum line from the pressure regulator.
  5. Remove the regulator retaining screw and remove the retainer bracket. Using a clean shop cloth to catch fuel spillage, carefully pull the regulator from the fuel rail. Twist the regulator slightly while removing to ease removal. Discard the O-ring.

4ecb713.jpg

Fig. Exploded view of the fuel pressure regulator mounting-3.1L and 3.4L (VIN E) engines
To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate a new pressure regulator O-ring with clean engine oil and install on the regulator inlet.
  4. Install the fuel return pipe to the regulator.
  5. Install a new retainer and spacer bracket into the slot on the fuel rail and install the pressure regulator to the fuel rail. Tighten the fuel return line nut to 13 ft. lbs. (17 Nm).
  6. Connect the vacuum line to the pressure regulator and install the retainer screw. Tighten to 76 inch lbs. (8.5 Nm).
  7. Inspect and verify that the retainer and spacer bracket is engaged in the slots in the fuel rail. Grasp and pull on the regulator to ensure that it is properly seated.
  8. Install the upper intake manifold. Please see .
  9. Connect the negative battery cable.
  10. Inspect for leaks using the following procedure:
    • Turn the ignition switch to the ON position for 2 seconds.
    • Turn the ignition switch to the OFF position for 10 seconds.
    • Turn the ignition switch to the ON position again.
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Other size engine can find in autozone.com (free register).

Hope this help (remember rated this).

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Starving for fuel sometimes I changed the fuel filter but problem persists. I'm thinking it may be a vacuum problem to the fuel tank. Thoughts? Russ


well there can be a few things that cause this
first off if this was in my shop I would check the fuel regulator this allows fuel back into the tank from the fuel rail so that you dont over pressure the fuel rail, if it is leaking past then this will starve the engine for fuel, also note that if your EVAP system onthe fuel tank is not working proporly the check engine light will come on there are sensors in place to worn you of a problem there and this will not starve your engine for fuel, if its not the regulator then its a fuel pump, only way to tell is to put a fuel pressure gage on the rail and drive the vehicle till it acts up and see what the pressure rating is at most newer vahicles require arround 50 plus PSI if below that you have a pressure problem and need ot possibly replace regulator on the fuel rail... if you need more help just replay ill check in later

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