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Author Topic: Brake pedal hard (pressurised) in morning?  (Read 1791 times)

Offline maxamplitude10

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Brake pedal hard (pressurised) in morning?
« on: June 19, 2020, 02:28:14 am »
Hi noticed my brake pedal is solid in the morning, all seems normal again once car is started.
Any ideas? Could it be a servo issue?
Regards
Max
« Last Edit: June 19, 2020, 02:34:39 am by maxamplitude10 »
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Offline pudding

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Re: Brake pedal hard (pressurised) in morning?
« Reply #1 on: June 19, 2020, 04:18:58 pm »
The first sign of servo failure is usually hissing noises from the footwell.  Not heard of the car having a big ol' stiffy in the morning though. Is it hard with the engine running?  Might be worth checking the brake servo feed line as it has a couple (I think) check valves in it.
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2007 ED30 | 2009 TDI 140 | 2016 BMW 330D

Offline maxamplitude10

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Re: Brake pedal hard (pressurised) in morning?
« Reply #2 on: June 19, 2020, 06:28:06 pm »
Thanks pudding, pedal goes back to normal as soon as car is started.
The more I've been thinking about it, I recently had new rear calipers and discs and pads all round, since then I have been parking it in gear with handbrake off..
Maybe this is why it is pressurised in the morning?
Have to see how it goes...
Max
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Offline Robsmib

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Re: Brake pedal hard (pressurised) in morning?
« Reply #3 on: August 10, 2020, 06:50:39 pm »
i would say you are losing vacuum overnight?
i found the brake servo vacuum pipe on mine had a small split in it. It runs along the firewall and then enters the back of the engine very close to the battery.
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Offline maxamplitude10

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Re: Brake pedal hard (pressurised) in morning?
« Reply #4 on: August 10, 2020, 09:49:43 pm »
Thanks I'll check it out :happy2:
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