Advice on bleeding brakes please - Page 4

saladdodger · 30-03-13, 12:27 AM

Quote:

Originally Posted by SPECKY

Saladdodger........... I just done all brakes on CQ ! New Calipers on rear and calipers off for refurb and paint on front ! Bled rears no problem....... even tho theres a brake pressure regulator thing to faf with !!! (i didnt know)
Fronts...... different story !!! Bubbles bubbles bubbles !!!! Still not right now ! Bought a Pneumatic bleeder but my old compressor not got enough UMPH to do it properly i think !

So car in for MOT on 12th so...... on way to MOT i'll call in at work and use our air there !!!

My sympathy goes out to you !!! VERY frustarting !

SPECKS

So annoyed dude, this problem goes back to Han 21st 2012. My problem is that the car isnt road legal at all, no one I know has a proper bleeder, the person (neighbour) that does isnt interested in helping, he works at VW. So the car sits and sits and sits with me trying new things. Crazy how this has become a nightmare.

Im just not in the know or in that social circle for help

Give me a Citroen any day

missfire · 30-03-13, 01:11 AM

Quote:

Originally Posted by saladdodger

Give me a Citroen any day

Now that's serious!

Surely not!

I've bled the 100T and the allroad front and back, both have ABS and the allroad has ESP too and all I did was take the fluid reservoir cap off, stick a bit of 5mm fish tank airline on the bleed nipples and opened them, they bled by gravity. There must be something wrong with the ABS unit on yours? The only thing I can think of. I remember Phil Payne saying somewhere that the bleeding procedure for ABS shouldn't really be any different to that of a normal system.

Beg/borrow/steal/hire a flaring tool, rip the ABS unit out an bin the fkr and run a full new set of pipes. You could do it in a weekend no bother. There's no way you can fail if you do that if you already have a good pump, new bomb, servo, master etc. you already have all the ingredients you need.

missfire · 30-03-13, 01:38 AM

Buy one of these -

http://www.amazon.co.uk/dp/B002V9522..._df_B002V9522O

Some of this stuff -

http://www.amazon.co.uk/7-5MTR-COPPE...se_s_cp_1_3A3E

And some of these -

http://www.amazon.co.uk/Connect-3188...4607394&sr=1-2

saladdodger · 30-03-13, 04:38 PM

This is silly, everything worked when the calipers were changed, how on gods earth can the abs unit fail like that.

If it has, i'll strip it, get what I can and say good riddance.

Worst car I have ever bought.

lefthooker · 30-03-13, 05:01 PM

Quote:

Originally Posted by SPECKY

Saladdodger........... I just done all brakes on CQ ! New Calipers on rear and calipers off for refurb and paint on front ! Bled rears no problem....... even tho theres a brake pressure regulator thing to faf with !!! (i didnt know)
Fronts...... different story !!! Bubbles bubbles bubbles !!!! Still not right now ! Bought a Pneumatic bleeder but my old compressor not got enough UMPH to do it properly i think !

So car in for MOT on 12th so...... on way to MOT i'll call in at work and use our air there !!!

My sympathy goes out to you !!! VERY frustarting !

SPECKS

Most likely duff master cylinder.

missfire · 30-03-13, 09:09 PM

Quote:

Originally Posted by saladdodger

This is silly, everything worked when the calipers were changed, how on gods earth can the abs unit fail like that.

Not failed. Full of air or damaged by winding in caliper pistons without opening the bleed nipples maybe? Who knows.

All I'm saying is, without the ABS unit all you have is a bunch of pistons and a bunch of pipes. You've already replaced every piston on the car by the sounds of it, including the calipers. If you had a normal system with no ABS unit then all you have is a bunch of new pistons and a bunch of pipes. Then the only possible two scenarios are that the pipes and pistons are full of fluid, or they are not full of fluid! Break it, I don't give a fk, only trying to help.

TeXerv · 04-04-13, 03:40 PM

Hi,
there is no need to open the bleeder nipples by winding the pistons.
I guess I wrote about it a few month ago but may be it,s not important what a Kraut says.

It is possible that the brake master cylinder was damaged during bleeding by pumping the brake pedal. So first you need to find out whether the master cylinder is blown or not. Therefore remove the brake lines from the master cylinder and switch them with bleeder nipples. Bleed the master cylinder alone by these nipples. This is a little effort and takes just a few minutes work. After bleeding the master cylinder you will have full pressure or no pressure on the brake pedal. (Edit: In case of a faulty master cylinder, the pressure might also decrease while keeping the foot on the pedal.) No (or decreasing) pressure means, that the master cylinder is blown. Please let us know about the result of this little test.

I drive a Citroen Xantia and a C5 Tourer. Nice cars but even not free of trouble.

SPECKY · 04-04-13, 06:32 PM

Thankyou TeXerv for that info !!! Ive just had a conversation today about how to check the Master Cylinder........ and no one knew !!!

I for one will try this test if bleeding does not work this time !!

SPECKS !

04-04-13, 06:32 PM	#38
SPECKY Grown up member Classic Audi Club Member Join Date: Aug 2009 Location: Petrol Station !!! Posts: 583	Thankyou TeXerv for that info !!! Ive just had a conversation today about how to check the Master Cylinder........ and no one knew !!! I for one will try this test if bleeding does not work this time !! SPECKS ! __________________ NEW daily ......Fleagle the Yeti 1985 2.2 Coupe Quattro 1997 Mercedes SL320 2004 1.8 225 TT Roadster (SOLD)) 1997 2.6 V6 Cabriolet (Optimus) SOLD (sadly) 2004 3.2 V6 DSG Mk 1 TT (Ttoy) SOLD

30-03-13, 01:38 AM	#33
missfire making wooden things Classic Audi Club Member Join Date: Dec 2009 Location: cow land Posts: 8,156	Buy one of these - http://www.amazon.co.uk/dp/B002V9522..._df_B002V9522O Some of this stuff - http://www.amazon.co.uk/7-5MTR-COPPE...se_s_cp_1_3A3E And some of these - http://www.amazon.co.uk/Connect-3188...4607394&sr=1-2

30-03-13, 04:38 PM	#34
saladdodger Senior Member Classic Audi Club Member Join Date: Jun 2011 Posts: 1,030	This is silly, everything worked when the calipers were changed, how on gods earth can the abs unit fail like that. If it has, i'll strip it, get what I can and say good riddance. Worst car I have ever bought.

04-04-13, 03:40 PM	#37
TeXerv Grown up member Join Date: Oct 2011 Location: Northern Krautland Posts: 241	Hi, there is no need to open the bleeder nipples by winding the pistons. I guess I wrote about it a few month ago but may be it,s not important what a Kraut says. It is possible that the brake master cylinder was damaged during bleeding by pumping the brake pedal. So first you need to find out whether the master cylinder is blown or not. Therefore remove the brake lines from the master cylinder and switch them with bleeder nipples. Bleed the master cylinder alone by these nipples. This is a little effort and takes just a few minutes work. After bleeding the master cylinder you will have full pressure or no pressure on the brake pedal. (Edit: In case of a faulty master cylinder, the pressure might also decrease while keeping the foot on the pedal.) No (or decreasing) pressure means, that the master cylinder is blown. Please let us know about the result of this little test. I drive a Citroen Xantia and a C5 Tourer. Nice cars but even not free of trouble.