MINI2

yoni99 · Apr 26th, 2006, 08:11 AM

I have just had both front and rear brake pads replaced and as expected they the brakes are a bit spongy. This is only until the "bed" in properly. But since they have been changed I have noticed that when I press down on the brake pedal there is a noise similar to air escaping. Sounds like when you put your foot down on an foot pump without the nozel being attatched to anything.

Any ideas???

Capsaisin · Apr 26th, 2006, 08:27 AM

Usually you can only hear this if the engine is switched off, it may be the slight, short hiss of air from the brake servo. You break (

) the vacuum in the servo when you push on the brake pedal.
If you can hear it over the noise of the engine and it continues for as long as you are pressing on the brake pedal, then maybe there's a hole in the servo diaphragm??? But if this were the case you would lose braking effort and the brake pedal would probably go rock hard.
Stick your head under the bonnet and get a mate to press the brake pedal, with the engine running.
If you just get a short, faint hiss, I guess this is normal.

OllyH · Apr 26th, 2006, 08:30 AM

Hi - just a quick question, is the noise heard when you press down on the brake, or as you take your foot off it, releasing pressure? If it is the latter, this is what was happening on my car. MINI looked at it and diagnosed a loose servo valve (I think) and it was repaired undert warranty.

yoni99 · Apr 26th, 2006, 10:55 AM

It happens when pressing down on the pedal while the engine is on. It has only occured after getting my new pads fitted

Capsaisin · Apr 27th, 2006, 08:21 AM

Yeah, could be the servo valve. Something to do with the servo anyway.

KrisMcGrath · Apr 27th, 2006, 08:54 AM

as long as accelarate pedal works im happy

yoni99 · Apr 27th, 2006, 02:14 PM

Just tried my mates two week old mini cooper and its makes the same noise. Can hear it without the radio on. I guess its always been there but just only noticed it know becuase I've been paying attention to the brakes after changing them

Cheers guys

Apr 26th, 2006, 08:11 AM	#1
yoni99 MINI2 Regular Join Date: May 2005 Local Time: 09:23 PM Posts: 110 Offline	Problem with brake pedal I have just had both front and rear brake pads replaced and as expected they the brakes are a bit spongy. This is only until the "bed" in properly. But since they have been changed I have noticed that when I press down on the brake pedal there is a noise similar to air escaping. Sounds like when you put your foot down on an foot pump without the nozel being attatched to anything. Any ideas???

Apr 26th, 2006, 08:27 AM	#2 (permalink)
Capsaisin cave capsicum Join Date: Mar 2006 Location: Crewe Local Time: 09:23 PM Posts: 3,366 Offline	Usually you can only hear this if the engine is switched off, it may be the slight, short hiss of air from the brake servo. You break () the vacuum in the servo when you push on the brake pedal. If you can hear it over the noise of the engine and it continues for as long as you are pressing on the brake pedal, then maybe there's a hole in the servo diaphragm??? But if this were the case you would lose braking effort and the brake pedal would probably go rock hard. Stick your head under the bonnet and get a mate to press the brake pedal, with the engine running. If you just get a short, faint hiss, I guess this is normal.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Rate This Thread
Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Brake pedal problem	Journeyman	Faults & Fixes	4	Sep 28th, 2007 11:47 AM
Help - Brake Pedal Whoosh	new_mini	Faults & Fixes	4	Sep 21st, 2006 06:39 AM
Brake pedal click	dancefreak	Faults & Fixes	0	Mar 23rd, 2005 07:57 AM
Loose brake pedal	jzlemon	MINI Cooper S	4	Mar 9th, 2004 09:16 AM
Brake pedal	Yui	Faults & Fixes	6	Feb 23rd, 2003 05:03 PM

MINI2

Fuel for your MINI obsession

For (almost) all things alloy, steel and rubber, plus upgrading your MINI's stopping ability

Today
Sponsors	Sponsored Links Registered members do not see Google Ads posts, they can also post messages, pictures, and classified adverts. Register your free account today and become a member of MINI2 - MINI Forum

Apr 26th, 2006, 08:30 AM	#3 (permalink)
OllyH OllyH My Classifieds Join Date: Nov 2005 Location: Nottingham Local Time: 09:23 PM Posts: 316 Offline	Hi - just a quick question, is the noise heard when you press down on the brake, or as you take your foot off it, releasing pressure? If it is the latter, this is what was happening on my car. MINI looked at it and diagnosed a loose servo valve (I think) and it was repaired undert warranty.

Apr 26th, 2006, 10:55 AM	#4 (permalink)
yoni99 MINI2 Regular Join Date: May 2005 Local Time: 09:23 PM Posts: 110 Offline	It happens when pressing down on the pedal while the engine is on. It has only occured after getting my new pads fitted

Apr 27th, 2006, 08:21 AM	#5 (permalink)
Capsaisin cave capsicum Join Date: Mar 2006 Location: Crewe Local Time: 09:23 PM Posts: 3,366 Offline	Yeah, could be the servo valve. Something to do with the servo anyway.

Apr 27th, 2006, 08:54 AM	#6 (permalink)
KrisMcGrath MINI2 Regular My Classifieds Join Date: Dec 2005 Location: Brighton Local Time: 09:23 PM Posts: 349 Offline	as long as accelarate pedal works im happy

Apr 27th, 2006, 02:14 PM	#7 (permalink)
yoni99 MINI2 Regular Join Date: May 2005 Local Time: 09:23 PM Posts: 110 Offline	Just tried my mates two week old mini cooper and its makes the same noise. Can hear it without the radio on. I guess its always been there but just only noticed it know becuase I've been paying attention to the brakes after changing them Cheers guys

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)