Question about 1992 Ford F150 SuperCab

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1992 F150 5.0 flooded

My fuel pressure regulator was shot..(I didn't know so I didn't change it)
My fuel pressure was huge and caused my fuel pump in rear tank to die..(changed it).
Tried to start the truck and it just turned over and over and wouldn't start.(too much fuel pressure I'm guessing caused it to flood).
I changed the regulator finally and there is lotsa spark . fuel pressure is good but the engine is so flooded there's gas in the oil...Is it too flooded to start now and if so how do I clean it out and get it to be (un-flooded)?

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  • kingsizerob Feb 02, 2010

    I can't afford that! Is there anything I can do???

  • bulldogchief
    bulldogchief May 11, 2010

    if you have gasoline in your oil, you have a MUCH BIGGER PROBLEM on your hands...have your truck towed to a good shop to undo what you "fixed"



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Hi, wow!

sounds bad, I would drain the oil and leave it over night to drip out so it is completely dry, leave all oil caps an anything that will allow air in off the truck.

Do you have a compressor or air line you could use to blast air through the engine. if this is diesel fuel then it will take much longer to evaporate if this is gas/petrol then over night should do it.

Hope this helps


Posted on Feb 01, 2010


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That is a real good question. Have you checked the fuel pressure on the fuel rail to see how much pressure there is when it refuses to start? It sounds like you may be losing your fuel pressure because of the fuel returning to the tank when the engine is hot. This could be due to a faulty fuel pump assembly or a faulty fuel pressure regulator.

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Fuel Filter Removal & Installation NOTE: A combination fuel filter and fuel pressure regulator is used on all gas powered engines. It is located on the top of the fuel pump module. It contains a diaphragm, calibrated springs and a fuel return valve. The internal fuel filter is also part of the assembly.
To Remove:
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2. Release fuel pressure
  3. Remove or disconnect the following:
    • Fuel Tank refer
    • Fuel tank and remove the purge line and vent line.
    • Fuel line from pressure regulator. Fuel Pressure Regulator Locking Tab dod_intrpd_fuel_reg_lckng_tabs.gif

    • Pressure regulator by pushing the locking tab in from locking slot and turning pressure regulator to unlock it.
    • Pull regulator straight up.
To Install:
  1. Push regulator down and into place.
  2. Turn fuel pressure regulator to lock it in place. Make sure take the locking tab is in the locking slot.
  3. Install or connect the following:
    • Fuel line to regulator
    • Fuel pump electrical connector into hole in the body.
    • The purge and vent lines.
    • Tank into position and install tank straps.
    • The fuel filler tube and tighten the clamp.
    • The stabilizer bar and install bolts.
  4. Lower vehicle.
  5. Install or connect the following:
    • The fuel pump electrical connector that is in the rear seat.
    • The rear seat.
    • The battery cable.
  6. Fill fuel tank. Use the DRB scan tool to pressurize the fuel system. Check for leaks.
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Fig. Cut away view of the fuel filter/pressure regulator
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The in-tank fuel pump module contains the fuel pump and pressure regulator which adjusts fuel system pressure. Fuel pump voltage is supplied through the fuel pump relay.

The fuel pump is serviced as part of the fuel pump module. The fuel pump module is installed in the top of the fuel tank and contains the electric fuel pump, fuel pump reservoir, inlet strainer fuel gauge sending unit, fuel supply and return line connections and the pressure regulator. The inlet strainer, fuel pressure regulator and level sensor are the only serviceable items. If the fuel pump requires service, replace the fuel pump module.
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  2. Properly relieve the fuel system pressure.
  3. Remove or disconnect the following:
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    Fuel lines from the fuel pump module by squeezing the quick-connect fitting with thumb and forefinger


    Fig. Using special tool 6856, remove the fuel pump module locknut
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  5. Using special tool 6856, remove the fuel pump locknut by turning it counterclockwise.
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  6. Remove the fuel pump and O-ring from the tank and discard the O-ring.
To install:
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  2. Position the fuel pump module in the tank. Be sure the alignment tab on the underside of the pump module flange sits in the corresponding notch in the fuel tank.
  3. While holding the fuel pump module in place install the locking ring and torque to 40 inch lbs. (5 Nm) using special tool 6856 or a spanner-type tool.
  4. Install or connect the following:
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Hope this helped.

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