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Author Topic: Complete brake failure!!  (Read 5918 times)

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P6UL K

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Complete brake failure!!
« on: 29 December 2013, 08:50:13 »

During the drive home last night I noticed something was amiss with the brake pedal and brakes, The brakes were still working fine but I noticed that the pedal was slowly sinking away under my foot when I was applying pressure although the car was still slowing at a good rate. Then during the drive to work this morning first roundabout I approach and the pedal just drops away under my foot completely and the next thing I know I'm trying to push my foot through the bulkhead!!

Can the brake servo have possibly given up the ghost?! As much help as possible would be great so I can pinpoint a few things to investigate after my shift today as I need the car to get to from work!
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JamesV6CDX

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Re: Complete brake failure!!
« Reply #1 on: 29 December 2013, 08:55:51 »

What's the fluid level like?
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P6UL K

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Re: Complete brake failure!!
« Reply #2 on: 29 December 2013, 08:59:34 »

I'll have to do get back to you on that one James as I'm currently driving to Brighton for a delivery
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Nick W

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Re: Complete brake failure!!
« Reply #3 on: 29 December 2013, 09:17:49 »

Servo failure is very rare(it's a very simple device), and makes the pedal hard.
You're looking for a fluid leak, have a quick look at the calipers and the hoses that lead to them.
But the most likely cause is a faulty master-cylinder.
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Andy B

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Re: Complete brake failure!!
« Reply #4 on: 29 December 2013, 09:20:14 »

Servo failure is very rare(it's a very simple device), and makes the pedal hard.
You're looking for a fluid leak, have a quick look at the calipers and the hoses that lead to them.
But the most likely cause is a faulty master-cylinder.

That'd be my guess too
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P6UL K

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Re: Complete brake failure!!
« Reply #5 on: 29 December 2013, 16:12:35 »

What's the fluid level like?

Completely empty!
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JamesV6CDX

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Re: Complete brake failure!!
« Reply #6 on: 29 December 2013, 16:24:17 »

Get hunting for the leak, then ;D
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P6UL K

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Re: Complete brake failure!!
« Reply #7 on: 29 December 2013, 16:40:35 »

I have!

All 4 calipers and their flexi hoses are dry as a bone with no sign of any fluids inside the rims or on the ground.  AFAIK there aren't any other rubber brake hoses are there?
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Marks DTM Calib

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Re: Complete brake failure!!
« Reply #8 on: 29 December 2013, 17:02:12 »

Has some Muppet fitted non vented discs to the rear?
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Andy H

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Re: Complete brake failure!!
« Reply #9 on: 29 December 2013, 17:18:30 »

It is possible for a seal or seals to fail in the master cylinder and allow fluid to get sucked into the servo. From there it  passes into the inlet manifold and disappears in a puff of smoke (so doesn't leave any puddles as evidence). Never heard of it happening to an Omega though  :-\
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05omegav6

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Re: Complete brake failure!!
« Reply #10 on: 29 December 2013, 18:53:35 »

Is this the diesel one or the 3.2 :-\
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henryd

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Re: Complete brake failure!!
« Reply #11 on: 29 December 2013, 19:07:19 »

I have!

All 4 calipers and their flexi hoses are dry as a bone with no sign of any fluids inside the rims or on the ground.  AFAIK there aren't any other rubber brake hoses are there?

It doesn't have to be a flexy hose that's failed,steel pipes can and do corrode and burst
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05omegav6

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Re: Complete brake failure!!
« Reply #12 on: 29 December 2013, 19:23:54 »

I have!

All 4 calipers and their flexi hoses are dry as a bone with no sign of any fluids inside the rims or on the ground.  AFAIK there aren't any other rubber brake hoses are there?

It doesn't have to be a flexy hose that's failed,steel pipes can and do corrode and burst
Don't ignore the clutch... although, it's designed to fail long before the brakes do, making it almost impossible to drive before the brakes fail :o

If the clutch works, you still have fluid in the system, the level in the brake reservoir is different to the level under the cap...
« Last Edit: 29 December 2013, 19:26:38 by ex taxi al »
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P6UL K

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Re: Complete brake failure!!
« Reply #13 on: 29 December 2013, 19:24:14 »

Has some Muppet fitted non vented discs to the rear?

I'll have to let you know in the morning Mark
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P6UL K

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Re: Complete brake failure!!
« Reply #14 on: 29 December 2013, 19:25:23 »

Is this the diesel one or the 3.2 :-\

The thorn in my side mate - the hearse.
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