306 DTurbo fuel back siphoning?

Discussion in 'Peugeot 306' started by dTurbo, May 17, 2005.

  1. dTurbo

    dTurbo Guest

    Somehow overnight the fuel in our DTurbo has started back siphoning
    into the diesel tank when the car is left for any substantial period
    of time (only seen overnight).

    We can pump the fuel back into the line using the hand pump in the
    engine bay but this is a bit tedious everytime we want to use the car!

    Any ideas? I thought air leak somewhere or a faulty non-return valve
    but I don’t know how the fuel system is set up on a 306 DTurbo!

    Thanks in advance
     
    dTurbo, May 17, 2005
    #1
  2. dTurbo

    Fitzy Guest

    sounds like air leaking in to the fuel lines,
    one of the most common areas for this leak is the filter bowl,
    I had a similar thing on my 405 some time ago, turned out to be the seal
    below the filter bowl,

    Fitzy
     
    Fitzy, May 18, 2005
    #2
  3. Admittedly a completely different car, but I had a similar problem on a
    405 diesel a few years ago. It took ages to find, and turned out to be a
    pinhole in the plastic fuel line. It rubbed slightly against the body at
    the point where it left the body to head towards the engine, leaving a
    small enough hole to admit air, but not big enough to cause a puddle of
    fuel. It could be worth having a feel around similar areas.

    Matt
     
    Matthew Haigh, May 18, 2005
    #3
  4. dTurbo

    anon Guest

    needs a new manual primer pump, (the pump you are using to feed the fuel
    back in).
    This incooperates a one way valve which prevents fuel returning to the tank.
    obviously this valve is leaking.
    regards.
    Steve.


    http://www.autoforumz.com/eform.php?p=586231
     
    anon, May 18, 2005
    #4
  5. dTurbo

    mindwipe Guest

    can be tested by removing said pump
     
    mindwipe, May 18, 2005
    #5
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