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Author Topic: Brake pedal hard to push down  (Read 7788 times)

Offline wazevan

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  • Posts: 141
  • Thanked: 2
  • Model: Galaxy Mk3
  • Spec: 2.0 ghia 08
  • Region: South Wales
  • Country: United Kingdom
Brake pedal hard to push down
« on: April 15, 2014, 04:25:17 PM »
Hi all,
Can you help on this.My brake pedal went solid  and I had to put pressure on it to get the brakes to work.I took it to kwick fit(wanted it looked at straight away.) garage and they could not find any probs with it and the brakes worked fine..It happened again yesterday and I noticed ,if I rev the engine the brake pedal goes back to normal.
This has happened  a total of 4 times in 3 months. Any ideas where I should start to look.I have looked at the servo pipes ,but to tell the truth im not sure wot im looking for.
Cheers

Offline insanitybeard

  • Greetings from Mr Chick!
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  • Model: Galaxy Mk2
  • Spec: '54 130ps TDI Ghia
  • First Name: Paul
  • Region: South West
  • Country: United Kingdom
Re: Brake pedal hard to push down
« Reply #1 on: April 15, 2014, 05:01:36 PM »
It does sound like a loss of servo assistance, could be caused by a vacuum leak, constricted pipe, defective non-return valve in the servo pipe or defective vacuum pump, first place to check though would be the rigid nylon servo pipe from the vac pump to the servo- you're looking for any damage to the pipe, e.g, splits or rubbing through of the tube wall (causing vacuum loss) or signs of collapsing (constricting the flow of vacuum to the servo). This can be easier said than done due to access but worth looking closely at the pipe terminations on the servo and vacuum pump itself to start with.
« Last Edit: April 15, 2014, 05:03:59 PM by insanitybeard »
Always learning..... Often by mistakes!

Offline Mirez

  • Pondering the next mod...
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  • Model: Galaxy Mk2
  • Spec: 03 115PS Ghia
  • First Name: Mark
  • Region: South West
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Re: Brake pedal hard to push down
« Reply #2 on: April 15, 2014, 05:04:28 PM »
Sounds like a loss of vacuum pressure to me. Remove the top engine cover and look for the black ball looking thing (the vac reservoir) - check the pipe from that is intact and not damaged, then follow the other rubber lines around the back and see if any are damaged.

If all is well then as a test, pull off the pipe from the reservoir and have someone start the car - use your thumb to cover the end of the pipe and see if its sucking. If your assistant revs the car with it covered you might be able to hear a whistling noise if any pipes are leaking (you might want to put a glove on, it should suck pretty hard!)
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
14 VW Tiguan 2.0 TDI 177 AWD R-Line in Deep Black Pearl
With panoramic sunroof, bi-xenon headlights remapped at 205bhp.
08 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)

VCDS HEX/CAN - Scans/Coding done in Wiltshire in exchange for winegums! :)

Offline Mirez

  • Pondering the next mod...
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  • Posts: 3633
  • Thanked: 139
  • Model: Galaxy Mk2
  • Spec: 03 115PS Ghia
  • First Name: Mark
  • Region: South West
  • Country: United Kingdom
Re: Brake pedal hard to push down
« Reply #3 on: April 15, 2014, 05:05:55 PM »
Dah, you got in there first! Still glad we're thinking along the same lines... :)
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
14 VW Tiguan 2.0 TDI 177 AWD R-Line in Deep Black Pearl
With panoramic sunroof, bi-xenon headlights remapped at 205bhp.
08 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)

VCDS HEX/CAN - Scans/Coding done in Wiltshire in exchange for winegums! :)

Offline wazevan

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  • Posts: 141
  • Thanked: 2
  • Model: Galaxy Mk3
  • Spec: 2.0 ghia 08
  • Region: South Wales
  • Country: United Kingdom
Re: Brake pedal hard to push down
« Reply #4 on: April 17, 2014, 06:13:26 PM »
cheers both,ill try what you say and get back. ;)

Offline alial

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  • Posts: 49
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  • Model: Sharan Mk2
  • Spec: 2002 1.9 tdi sport
  • Region: Scotland
  • Country: United Kingdom
Re: Brake pedal hard to push down
« Reply #5 on: April 19, 2014, 12:47:50 AM »
I had the same problem 2 weeks ago...vacuum loss from the the servo pipe ..disconnect that pipe from the servo and  pressure pump ..99% it is leaking .

 

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