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Fuel won,t return to both tanks - Cars & Trucks

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Try replacing your fuel relay switch

Posted on Oct 28, 2012

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When i use the front fuel tank the rear tank over flows after a short time.

You did not post what vehicle this is on, if this engine is fuel injected, the un-used fuel is returned to the tank from the fuel rail. Since the return line goes to only one tank, it is overfilling that tank, if the fuel control was modified to accept another tank then the valves have to be changed to accommodate dual flow to the active tank.

Apr 06, 2016 | Cars & Trucks

1 Answer

Poulanprop fuel line routing diagram

in 1980 it is pretty much forward from fuel tank to fuel pump from fuel pump to carburetor ....the return line from pump to tank

hope it helps

Apr 06, 2014 | GMC C1500 Cars & Trucks

1 Answer

A 94 f 350 fuel exchanging between tanks

there is no equalising between tanks and all the return fuel from the injectors is being contained in one tank. Try shifting the fuel return line to the tank that you are not drawing out of so that the fuel then flows into the tank that the pump is drawing from. Check that the tap/ s between tanks is turned on.

Mar 08, 2014 | Cars & Trucks

1 Answer

The but on my fuel filter is cross threaded and won't come loose. How do I get it off?

To change the fuel filter in your 1986 Ford F350, remove the filter from the joint that also is the fuel pressure regulator with the return line coming out of it and running back to the tanks. It might be hidden in there but it would be a small filter.

May 08, 2013 | Cars & Trucks

1 Answer


is the car injected? are you sure it was the fuel return line?
when the water was put in tank was the car driven?

Mar 19, 2013 | Cars & Trucks

1 Answer

1996 Dodge ram 1500 5.9L won't accelerate properly

Have a fuel pressure test done on the manifold as you may have a faulty fuel return regulator valve which is not allowing the pump to build up the required pressure but instead is allowing the fuel to flow back to the tank

Feb 01, 2013 | Dodge Ram 1500 Cars & Trucks

1 Answer

Fuel runs from back tank to front sometimes

If your driving a ford truck the fuel pump assy that is in the tank that is recieving the gas is leaking and allowing fuel to enter. Ford uses a valve in the fuel pump assy that is activated when fuel pressure is applied to it and it opens a port and allows the excess fuel to return back to the tank. They do not use a switching valve between tanks just whichever pump is activated allows fuel to return to that tank. When this valve fails fuel is returned to this tank all the time, pumping it from one tank to the other.
If you dont have a Ford the switching valve assy. is probably faulty.

Jul 14, 2012 | Cars & Trucks

1 Answer

Removed gas tank guard now won't start

Overtime, Jeep Grand Cherokee fuel tanks develop rust and accumulate sediment. This is especially true if the tank sits empty for a period of time. Rust and sediment can break loose and cause clogged filters. When the filter is clogged, the engine does not receive the amount of fuel required to operate. The fuel tank can be cleaned out; however, replacing the tank is easier.
  • 1 Apply the parking brake.

  • 2 Remove the gas cap.
  • 3 Remove the fuel pump relay from the power distribution center under the hood. Look at the underside of the power distribution cover, and locate the fuel pump relay.

  • 4 Attempt to start the engine, cranking the engine for several seconds.
  • 5 Turn the ignition to "Off." Install the fuel pump relay.
  • 6 Disconnect the negative cable from the battery.
  • 7 Lift the fuel tank into position, using the jack.

    8 Attach the fuel filler hose and vapor return hose to the fuel tank.Tighten the clamps with a Phillips screwdriver.

  • 9 Pivot the fuel tank retaining straps into position. Tighten the fuel tank retaining strap nuts with a socket and ratchet. Lower the jack.

  • 10 Connect the fuel pump electrical connector, the fuel filter line and the fuel return line. Push the fuel line retainer into the chassis.
  • 11 Raise the heat shield. Install the mounting bolts. Tighten the mounting bolts with a socket and ratchet.
  • 12 Install the tow hooks or trailer hitch, if equipped.
  • 13 Lift the skid plate into position with the jack. Tighten the skid plate mounting bolts with a socket and ratchet.
  • 14 Attach the electrical service connector to the bumper with a socket and ratchet.
  • 15 Raise the jack and remove the jack stands. Slowly, lower the vehicle.
  • 16 Pour the fuel into the gas tank. Connect the negative battery cable.
  • Buy Custom car Parts.

    Jun 02, 2012 | 1995 Jeep Grand Cherokee

    1 Answer

    What is the best way to change the fuel pump?

    Hi, welcome to my name is Shawn and I will be answering your question.

    1. Relieve the fuel system pressure. Refer to the procedure in this section.
    1. Disconnect the battery ground cable (14301) .
    1. Drain the fuel from the fuel tank (9002) . Refer to the procedure in this section.

      Fuel Tank and Related Components
    1. Raise and support the vehicle.
    1. Remove the two pins from the fuel tank front protector.
    1. Remove the three fuel tank front protector bolts and remove the fuel tank front protector.
    1. Disconnect the evaporative emission hose (9E325) from the evaporative emission valve (9B593) .
    1. NOTE: Label the fuel return line and fuel supply line to ease installation.
      Loosen the fuel return hose clamp and slide it away from the fuel return hose connection.
    1. NOTE: Use a rag to prevent fuel from spilling while disconnecting the fuel lines.
      Disconnect the fuel return hose at the fuel tank .
    1. Loosen the fuel supply hose clamp and slide it away from the fuel supply hose connection.
    1. Disconnect the fuel supply hose at the fuel tank .
    1. Disconnect the fuel pump and bracket electrical connector.
    1. Loosen the hose clamp from the fuel tank to filler pipe hose (9047) and slide the hose clamp toward the fuel tank .
    1. Separate the fuel tank to filler pipe hose from the fuel tank filler pipe (9034) .
    1. Place a jack under the fuel tank to support it when the fuel tank support straps are removed.
    1. Remove the two fuel tank support strap bolts and allow the fuel tank support straps to hang down.
    1. Remove the spring clips from the fuel tank support strap hinges.
    1. Remove the fuel tank support strap hinges and remove the fuel tank support straps.
    1. NOTE: An assistant may be necessary to remove the fuel tank .
      Lower the fuel tank from the vehicle.

    I hope my assistance helped you and resolved your concern, if you need further assistance please ask.

    Aug 08, 2011 | 1995 Mercury Villager

    3 Answers

    Drive 1988 ford f150 on the highway it dies and won,t start back. It acts like it is out of gas. Let it set 30 mins. and it starts right up

    Fuel Pump-a possible. The time frame of 30 minutes will vary.
    The armature on the pump motor is worn, as well as the tiny bearing,so it seizes or just stops conducting current.
    Drop fuel tank and replace. May be able to remove all bed bolts but rear ones, and tip bed up.

    Sep 28, 2010 | 1988 Ford F 150

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