corsa b v6 - brakes are shocking help - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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one-mr-t

Member

Registered: 4th Aug 09
Location: Greater Manchester
User status: Offline

8th Jul 11 at 08:31

Got a corsa b with c25xe fitted, I think the front brakes are 256mm 2.0 brakes on the back are drums. The brake pedal sinks to the floor and it doesn't want to stop, I've blead the full system blead each corner individually, when the engine is turned off and you pump the brake pedal it goes hard, but as soon as you start the engine with your foot on the brake pedal it just sinks again. Can anybody help please?

Eddx14xe

Member

Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline

8th Jul 11 at 09:07

Could be the rear adjusters.

Stamp on the pedal a few times and see if it makes a difference. If not try and adjust the drums

one-mr-t

Member

Registered: 4th Aug 09
Location: Greater Manchester
User status: Offline

8th Jul 11 at 09:15

Ok will try that over the weekend

reecegsi

Member

Registered: 16th Mar 11
Location: birmingham
User status: Offline

8th Jul 11 at 14:47

I would upgrade brakes to ones off a v6??? Cheap and easy to change

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

8th Jul 11 at 14:57

Might sound silly, but are your calipers the right way up? Bleed nipple to the top.

Seen it done before/

one-mr-t

Member

Registered: 4th Aug 09
Location: Greater Manchester
User status: Offline

8th Jul 11 at 16:12

Yeah calipers are right way up, disks and pads are like new, unsure how the back shoes are but the hand brake locks up good. Could it be the brake servo because that's the standard 1.2 8v one?

AlexW

Member

Registered: 25th Oct 08
Location: Essex
User status: Offline

8th Jul 11 at 16:21

I think I'm correct in saying all servos on corsa's are the same, Either way its the servo that helps you push the pedal, if it was lacking it would make the pedal hard, not easy to push right to the floor like the issue you are having.

I don't know what to suggest really, checked for leaks?

one-mr-t

Member

Registered: 4th Aug 09
Location: Greater Manchester
User status: Offline

8th Jul 11 at 16:46

No leaks that I know off the brake fluid level has stayed the same since I blead them up the other day. The brakes are that bad I was pushing the pedal down as hard as I could when I was driving and it wasn't doing very much. The brakes on my brothers mk2 fiesta are better!

Crana

Member

Registered: 20th Jan 09
Location: Newcastle
User status: Offline

8th Jul 11 at 16:49

I have the same problem

barnsey boy

Member

Registered: 27th Aug 09
Location: Bromley, Greater London
User status: Offline

8th Jul 11 at 17:03

exactly the same thing happened to mine last year pushed the brake pedal to the floor and nothing much happens, i changed the master cylinder for a new one and that fixed it, hope this helps.

one-mr-t

Member

Registered: 4th Aug 09
Location: Greater Manchester
User status: Offline

8th Jul 11 at 17:35

My mate was thinking the master cylinder aswell will get one on weekend thanks lads

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