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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » Brake Bleeding Help - Possible Damage?


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Author Brake Bleeding Help - Possible Damage?
freestylerx
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Registered: 27th Mar 06
User status: Offline
   22nd Jun 08 at 18:51   View User's Profile U2U Member Reply With Quote
Hi,

Currently changed pads & discs and instead of clamping the brake hose, I let it just drip now the whole system is flooded with air.
I bled the front left side ok, but now after bleeding the front right side, its just spitting air out, instead of any fluid.

The resovoir is topped up to MAX

If I...
1) Tighten the bleed screw and pump the brake pedal a few times, keeping pressure on the last stroke, then loosen the bleeder nipple, nothing happens.

or 2) Pump the brake pedal while the bleeder nipple is loose then I can just hear a lot or gas gettign squeezed in/out.

I can no longer get brake fluid flowing from the bleeder nipple.
Possible damage to central fluid resovoir / diaphram ?

Any thoughts?
leigh_boy
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Registered: 22nd Jun 08
Location: eastbourne
User status: Offline
22nd Jun 08 at 18:57   View User's Profile U2U Member Reply With Quote
do no:1 servil times over also make sure u havent ran ou of brake fluid.

also make sure the pots are back in.

have a look at the resovoir and if theres an grime or anything give it a good clean, also look for any kinks in the break line
Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
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22nd Jun 08 at 22:29   View User's Profile U2U Member Reply With Quote
/\/\
Kurt
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Registered: 23rd Oct 05
Location: Hi
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22nd Jun 08 at 22:35   View User's Profile U2U Member Reply With Quote
arent you meant to start furthest away from the servo when bleeding brakes?

i.e rear passenger, rear driver, front passenger, front driver
freestylerx
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Registered: 27th Mar 06
User status: Offline
29th Jun 08 at 15:21   View User's Profile U2U Member Reply With Quote
After getting bleeded at a garage, brakes were perfect, but now the pedal travel amount, has greatly increased.
Heard its possibly the seal on the Master Cylinder.

Are these seals re-placable or is it a new Master Cylinder? How can I check?
Also how hard is it to get to it?

Thanks
byrnie_2004
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Registered: 11th Mar 07
Location: Marple, Greater Manchester
User status: Offline
29th Jun 08 at 17:41   View User's Profile U2U Member Reply With Quote
scrappy-change master cylinder
freestylerx
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Registered: 27th Mar 06
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29th Jun 08 at 20:48   View User's Profile U2U Member Reply With Quote
Hard to get to? Price am I looking at ?
byrnie_2004
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Registered: 11th Mar 07
Location: Marple, Greater Manchester
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29th Jun 08 at 21:18   View User's Profile U2U Member Reply With Quote
shouldn't be more than £20, shouldnt be hard to find at all really
freestylerx
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Registered: 27th Mar 06
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29th Jun 08 at 21:48   View User's Profile U2U Member Reply With Quote
Thanks alot
freestylerx
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Registered: 27th Mar 06
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30th Jun 08 at 09:43   View User's Profile U2U Member Reply With Quote
Quoted £130 new?

Are there no repair kits available cause its a little expensive if its just a seal
VegasPhil
Premium Member

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Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
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30th Jun 08 at 09:53   View Garage View User's Profile U2U Member Reply With Quote
Get to a scrappy any buy a whole new master cylinder.

I take the the bleed nipples are facing up on the calipers before you replace them?

Corsa 2.0 16v Vegas - Sold
Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
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30th Jun 08 at 11:37   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by VegasPhil
I take the the bleed nipples are facing up on the calipers before you replace them?


My cousin had this problem......took him 2 weeks find it out
williamsvts
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Registered: 11th Apr 06
Location: north east
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1st Jul 08 at 17:34   View User's Profile U2U Member Reply With Quote
take the origional cylinder off an strip it down regrease the seals with silicon lube and replace them and bleed with a pressure bleeder or vacuum bleeder as the seals flip over.
VegasPhil
Premium Member

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Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
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1st Jul 08 at 18:43   View Garage View User's Profile U2U Member Reply With Quote
Yeh I did it to a mate's car

Embarrasing hehe.

Corsa 2.0 16v Vegas - Sold
freestylerx
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Registered: 27th Mar 06
User status: Offline
1st Jul 08 at 21:27   View User's Profile U2U Member Reply With Quote
Which seal is it exactly, I removed resovoir and the master cylinder.
The 2 main seals that were joing the resovoir to the cylinder was ok.

So am I supposed to take this cylinder apart? Can you tell me how? I can't seem get into it.
GavCorsa
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Registered: 13th Feb 06
Location: Grantham, Lincs Drives: bmw 323i coupe
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1st Jul 08 at 21:34   View User's Profile U2U Member Reply With Quote
i'v never disconected brake pipes when changing discs and pads !

or have i miss read it ?
freestylerx
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Registered: 27th Mar 06
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1st Jul 08 at 23:17   View User's Profile U2U Member Reply With Quote
OK, Master Cylinder removed!


Seal that held the resovoir and cylinder: Working order.


Secondary Piston & Seal: Working order.


Now the main piston n springs left inside: ...


-that aint coming out too easily, but is the problem likely to be in here? Or are the seals that I have seen been the most probable cause, thus the Master Cyilinder in perfect working order?
VegasPhil
Premium Member

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Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
User status: Offline
2nd Jul 08 at 10:31   View Garage View User's Profile U2U Member Reply With Quote
Have you checked the calipers are on correctly?!?!

Corsa 2.0 16v Vegas - Sold

 
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