Loss of brake fluid

Discussion in 'Tech/Mech General' started by RonnieJ, Oct 8, 2011.

  1. RonnieJ

    RonnieJ Read Only Funster

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    I have a 1999 Elddis Peugeot on an Alko chassis that has covered only 19,000 miles. It passed its M.O.T. a couple of weeks ago with no problem and this problem pre-dates the MOT by a couple of months.
    My brake fluid needed topping up before leaving to go to the Lincoln Show, after the show I went on to Skegness, Grimsby and then home to Thetford. On arriving home the reservoir was half empty again, I had travelled a total of 295 miles.
    I have checked the brake calipers, wheel cylinders and brake lines with no signs of any visible leaks. The brakes are working perfectly.

    If anyone has any experience of this or any suggestion as to where/why my brake fluid is going, I would appreciate any advice.
    Many thanks
    Ron
     
  2. CHRI$

    CHRI$ Funster

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    ronnie! you might want to check you brake pads in the front.as they have 2 big piston's on each caliper and if the pads are worn right down might be where the fluid has gone:thumb:
     
  3. scotjimland

    scotjimland Funster Life Member

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    It may be leaking into the brake booster itself.

    The seal that seperats the booster from the master can get damaged and allow the booster topull vacuum from the master. If it is not too bad, it may not smoke out of the exhaust,but you should be able to smell the odor from the exhaust. It may not be too stong but it can be the only explaination for fluid loss if there are no drips, and the fittings are dry.
     
  4. pappajohn

    pappajohn Funster Life Member

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    i'll go with Jim on this.

    if there's no visible leaks on the external components it only leaves an internally leaking master cylinder.
    just a pinhole sized hole in the pushrod seal is enough.
     
  5. RonnieJ

    RonnieJ Read Only Funster

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    Thanks Chris but the pads are like new, Looks like i shall have to take the booster apart as Jim said.
     
  6. RonnieJ

    RonnieJ Read Only Funster

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    Fixed it , you were right ,new master cylinder £46.00 all done thanks chaps.
     
  7. jhorsf

    jhorsf Read Only Funster

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    Just think if you had a new van like mine a light would be on and loads of warnings you would be able to take it to a Fiat dealer who would plug it in to the computer and charge you 100 £ just to tell you not sure what is causing it book it in and we will change a few parts to see if we can guess whats wrong and charge you a fortune see what your missing out on with your old technology van:Eeek:
    The amount it cost you would not get a dealer to lift the bonnet:thumb:
     
  8. RonnieJ

    RonnieJ Read Only Funster

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    So true a garage gave me a quote of £240.
     
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  9. pappajohn

    pappajohn Funster Life Member

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    robin b'stards.....were they changing the discs, pads and fluid as well for that price :Wink:
     
  10. rainbow chasers

    rainbow chasers Read Only Funster

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    This age of van has a major weak point in the brake lines. If you look at the master cylinder, then follow the pipes down as they go to the bulkhead and beneath the van.

    Just as they go out of sight, and hidden behind other components, there is a clamp which holds the brake pipes to the body - this is where they rot, as it holds all manner of grub and grime. This is probably where it is weeping from - it is very hard to see, and I have seen vehicles fail after having a strict VOSA MOT days before - you just cannot see that section of pipe!

    Have a look down there - more than likely the culprit at that age of vehicle.
     
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