Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
|
Really confused with this, and cant work out wtf is wrong with it.
Corsa 1.2 8v bought for £100 for my gf's brother to learn in.
The brake pedal bottoms out which then stops the car but the pedal goes all the way to the bottom
Things so far changed
Calipers changed with my old sport ones (known working condition)
Master cylinder and servo which is off my sport (known working condition)
New rear shoes
New rear cylinders
New disks
New pads
New front hoses
Bled around 10 times since fitting the above at different stages, which a proper bleeding kit aswel, so very certain there is no air within the system.
Clamping off the front hoses (before they were replaced) seemed to give a good pedal, hence replacing them but with the new ones fitted it was back to normal again, which makes me think the rears are most likely ok? 
[Edited on 27-06-2011 by Chris x]
|
Eddx14xe
Member
Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline
|
You done any hard braking? The slower/ more gentle you brake the more travel you get. It happens with my corsa. I presume as his learning this would be the case.
|
Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
|
Done hard braking. He hasnt driven it yet, im getting it ready for him and its deffo not right!
|
Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
|
Anyone?
|
DERV-POWER
Member
Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline
|
have you clamped the rears off , if so what was the pedal like then
|
Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
|
No, we havnt clamped the rears off, but one the fronts were clamped the pedal seemed ok, so they were replaced.
So I assume the rears are ok.
May aswel change them though so I can rule that out! 
|
alan-g-w
Member
Registered: 9th Nov 07
Location: Glasgow
User status: Offline
|
Air in the system imo
|
Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
|
Cant be, have bled the fuck out of it!
When the system is under pressure with the bleet kit, I get a nice flow of brake fluid with no bubles. So I highly doubt it.
[Edited on 29-06-2011 by Chris x]
|
Edges 58
Member
Registered: 30th Mar 10
Location: Nottingham
User status: Offline
|
Searched all the brake pipes for leaks?
|
AlexW
Member
Registered: 25th Oct 08
Location: Essex
User status: Offline
|
Leave it overnight with the pedal pushed right down, and bleed it the old fashion way.
|
Chris x
Member
Registered: 11th Sep 08
Location: Bexhill
User status: Offline
|
Brake pipes are deffo not leaking.
Surely the brakes are bled though, have done various othe Corsa's, Astra, Land Rovers with my gunsons bleed kit and never had a problem, have even tried bleeding it 'the old fashioned way' apart from leaving the pedal down over night?!?
|
alan-g-w
Member
Registered: 9th Nov 07
Location: Glasgow
User status: Offline
|
When you've exhausted all the sensible options start looking at the unlikely stuff. Only reason I said air in system is because I had the exact same sort of problems that you're describing and was getting a nice flow of fluid bleeding it, ended up that just constantly bleeding the back brakes for a good while sorted it
|
Cossie
Member
Registered: 17th May 02
User status: Offline
|
your problem might be the rear shoes adjuster .
|
DERV-POWER
Member
Registered: 13th Sep 09
Location: Greenfield, Flintshire
User status: Offline
|
what type rear bias load valve has it got
the inline ones or the one with the spring that goes to rear axle
|
Mike
Organiser: North West and North Wales
Premium Member
Registered: 20th May 06
Location: nr. Skipton, North Yorkshire
User status: Offline
|
Have the shoes been adjusted up properly? I had this with mine, thought it needed bleeding, tried it and it was still the same, adjusted the back brakes up and I now have about 3 clicks on the handbrake and a much better pedal. I had to adjust them up loads though and had to file down the lip on the drums to get them back over the shoes, they need to be really cosy.
|
