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daveo



Member Since: 21 Oct 2009
Location: london
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United Kingdom 2004 Range Rover Autobiography 4.4 V8 Java Black
Brake fluid disappearing

hi, a neighbour has asked me some advice and has got me stomped, he is loosing brake fluid 0n his 2004 l322 at an alarming rate but have got no idea where its going, cant see any thing on the floor, all the calipers are dry, ABS unit is dry nothing around servo or master
when i say alarming rate four full pots in 3 days or a pot an hour of driving but can not see where it is going
any ideas V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

Post #398508 31st Jul 2016 8:45am
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northernmonkeyjones



Member Since: 24 Mar 2012
Location: derby
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United Kingdom 2016 Range Rover Autobiography SDV8 Santorini Black

Either up above the fuel tank, or in the pipes to the front where they go through the plastic covers behind the cills?

It's go to be going somewhere, 3 pots is quite a lot. Check behind the front inner arches too.

Get him to pump the brakes while you look underneath. Unless it's a big hole you will probably only see it leak out when braking. There is nothing that can't be fixed with a hammer😜😜
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Post #398509 31st Jul 2016 8:48am
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6408

England 

Yep most likely to be on the "hidden" pipe run after the pipes exit the ABS modulator and disappear behind the LHF inner wheelarch, then down under the chassis rail to the back, under the tank cover.

Not sure why there is no evidence, can't think of anywhere it could pool, unless there is anice place under the tank cover? .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
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Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #398511 31st Jul 2016 10:00am
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Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
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England 2014 Range Rover Autobiography SDV8 Loire Blue

If the diaphragm in the servo fails then brake fluid can get drawn back through the servo and either into the engine if petrol or into the vacuum pump if diesel.... If petrol you usually get white smoke out the exhaust.... Outside possibility the fluid is running back inside the car from the servo and getting soaked up by the carpet and soundproofing behind the brake pedal.

I still recon the most likely thing will be a hidden pipe and it's pooling somewhere though... Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
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Post #398513 31st Jul 2016 10:36am
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daveo



Member Since: 21 Oct 2009
Location: london
Posts: 2307

United Kingdom 2004 Range Rover Autobiography 4.4 V8 Java Black

Thanks guys
i have seen the pipe that goes the inner wing where does the pipe end up, is there any catch tanks V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

Post #398523 31st Jul 2016 11:52am
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nicedayforit



Member Since: 11 Jun 2011
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England 2004 Range Rover Vogue Td6 Giverny Green

Brake master cylinder seals could be leaking thus allowing brake fluid to be drawn back into brake servo. Can do this for ages and fill brake servo with no signs of external leakage.

Post #398528 31st Jul 2016 12:17pm
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daveo



Member Since: 21 Oct 2009
Location: london
Posts: 2307

United Kingdom 2004 Range Rover Autobiography 4.4 V8 Java Black

HI
checked the servo looks bone dry, i just thought by now there would be a drip some where unless it is being soaked up by the carpet V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

Post #398530 31st Jul 2016 12:52pm
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1959terry



Member Since: 28 Apr 2014
Location: London
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United Kingdom 2015 Range Rover Vogue SE SDV8 Santorini Black

if its going into the servo it will be drawn into the inlet system and burnt out through the engine so you may not see it. White/light grey smoke? 2015 Range Rover VSE 4.4 SDV8. 1998 BMW 840 Sport, 2008 Aston Martin DB9
2009 Triumph Bonneville, 1959 Triumph Bonneville, 1969 Triumph Bonneville, 1975 T160 Triumph Trident, 2014 Suzuki Gladius, 1990 Harley Davidson Fat Boy.

Post #398638 1st Aug 2016 10:49am
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Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8207

England 2014 Range Rover Autobiography SDV8 Loire Blue

I thought I said that four posts ago.... Exclamation Exclamation Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Post #398646 1st Aug 2016 11:38am
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daveo



Member Since: 21 Oct 2009
Location: london
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United Kingdom 2004 Range Rover Autobiography 4.4 V8 Java Black

Hi
ok getting a bit more involved, servo is bone dry, cant find any thing around the carpets, the pipe that comes from the res and goes out through the inner wing, where does that go, is it a breather as this has got to be where its going
daveo V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

Post #398900 2nd Aug 2016 8:13pm
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Weejock



Member Since: 30 Dec 2011
Location: UK
Posts: 417

2002 Range Rover Vogue 4.4 V8 Epsom Green

It goes to the Pre-Charge pump used for DSC, HDC and ETC. which is mounted on the inner wing. It sucks fluid from the reservoir and injects it into system prior to the ABS module bypassing the master cylinder and ensuring adequate pressure.

Post #398931 2nd Aug 2016 10:49pm
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daveo



Member Since: 21 Oct 2009
Location: london
Posts: 2307

United Kingdom 2004 Range Rover Autobiography 4.4 V8 Java Black

thanks Thumbs Up looks like the inner wing is coming out
up to four pots and not a sign of a drip V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

Post #398943 3rd Aug 2016 6:59am
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