Accumulator leak
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  1. #1
    Tadpole
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    Default Accumulator leak

    Morning all,

    Last weekend, I flushed the LHM and pulled the spheres off the car for regassing. This morning, I found a big pool of green blood under the BX 16V this morning that had leaked from the accumulator pressure release screw. I couldn't see the cause so I loosened the screw off, cleaned it up then re-tightened it, and that fixed the leak. But as far as I could tell, it wasn't that grubby to begin with

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    Has anyone struck this before? What's the likely root cause?

    Thanks,
    Duncan

  2. #2
    Fellow Frogger! frog's Avatar
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    Hi Duncan, you're sure the leak was out of the bleed screw? I would check the sphere is tight and the O'ring is seated correctly. Wouldn't hurt to inspect and check the tightness of the high pressure pipes on the FDV too.

    Chris.

  3. #3
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by duncan16v View Post
    Morning all,

    Last weekend, I flushed the LHM and pulled the spheres off the car for regassing. This morning, I found a big pool of green blood under the BX 16V this morning that had leaked from the accumulator pressure release screw. I couldn't see the cause so I loosened the screw off, cleaned it up then re-tightened it, and that fixed the leak. But as far as I could tell, it wasn't that grubby to begin with

    Has anyone struck this before? What's the likely root cause?

    Thanks,
    Duncan
    Did you replace the square ring sphere seal and fit the seal, lubed with LHM into the base before spinning the sphere on?

    Never heard of the bleed screw doing that when nipped up.
    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Renault Scenic 2006 (daughter's)
    CitroŽn CX Pallas 1980

    National Co-ordinator, Renault 4CV Register of Australia

  4. #4
    Member Sturla's Avatar
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    If you have flushed the system it might develop a leak from the "top" of the pressure regulator. The o-ring there might be bad. I have had that happen 2 times, on two different LHM citroens after flushing the system with hydroflush.
    -74 DS23 bvh, -78 CXgti, -85 CXgtiT1

  5. #5
    1000+ Posts Ken W's Avatar
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    I think a bleed screw can leak a bit it not done up tightly.

  6. #6
    Tadpole
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    Default

    Thanks all.

  7. #7
    Tadpole
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    Just to close this off: the culprit was the O ring on the pressure release screw. I pulled off the pressure regulator, cleaned it up, replaced the O ring and pipe seals and not a drop of LHM to be seen now.

    Hurrah!

  8. #8
    UFO
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    Quote Originally Posted by duncan16v View Post
    Just to close this off: the culprit was the O ring on the pressure release screw. I pulled off the pressure regulator, cleaned it up, replaced the O ring and pipe seals and not a drop of LHM to be seen now because it has all been pumped out and ran down the driveway.

    Hurrah!
    Fixed it for you

    Good to know you have sorted the problem. It's always handy when the OPs provide the resolution to the problem and thereby increase the knowledge base.
    Craig K
    2009 C5 HDi Exclusive

  9. #9
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by duncan16v View Post
    Just to close this off: the culprit was the O ring on the pressure release screw. I pulled off the pressure regulator, cleaned it up, replaced the O ring and pipe seals and not a drop of LHM to be seen now.

    Hurrah!
    Thanks for letting us know. Good it is fixed.
    JohnW

    Renault 4CV 1951
    Renault R8 1965
    Renault Scenic 2005 (wife's)
    Renault Scenic 2007 (mine)
    Renault Scenic 2006 (daughter's)
    CitroŽn CX Pallas 1980

    National Co-ordinator, Renault 4CV Register of Australia

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