Again 205 Brakes+Bleeding+Long Pedal Etc

[camgti 56]

Hi Guys.

 

Im about to throw at match on it again.

 

Quick overview.

 

Car 1.9 GTi

 

MC Plumbed as per Service book diagram.

 

MC New 4 port 306 item 22mm (?)

Known Working Servo new vacuum hose

Braided ADR lines where applicable to replace flexi hoses, Standard solid lines otherwise. No leakes

206 GTi Front and rear calipers ( 266mm front discs ) good working order.

New Discs and Pads all around

 

Bench bled MC then again on the car. checked rod distances, all good.

Hoses all joined up not connected to the callipers and fluid running through.

Hoses joined to callipers and bled. Some air, 2 bottles of fluid through the lines starting from rear drivers side and around to the front. No air for a while.

 

Test drive. Average. No initial bite. Car does stop but spongy feel once you jump on it.

 

Re bleed again. tiny bubbles of air mainly from the rear.

 

test again. still average, not much difference.

 

bleed again no air coming out.

 

Crack all joins, get full flow and get fluid everywhere.

 

No difference.

 

I have only ever driven 1 205 that had good brakes. Most are terrible, soft and uninspiring. I really want to get these working right.

 

If theres no air in the system, what could it be? I hate hate hate doing work on the brakes as the results are never great!

 

I had to put the rear callipers in a vice to push the piston back to fit the new pads in. Would doing this have caused problems to the rear callipers?

 

 

Thanks for listening!

 

After all the searching and trawling through here it could be a couple of things.

 

Worn compensators playing tricks of some sort?

MC is a dud. If getting a new one with the setup I have whats the best option?

Servo is actually not that good?

Still air somewhere? If so how to remove it?

Plumbed the lines to the MC incorrectly?

Not bled the MC enough/correctly?

Whats the correct/best option?

 

Ive used water instead of brake fluid…

 

 

Cam

 

 

 

 

 

 

 

 

 

 

[Tom Fenton 1,536]

You say new discs and pads all round, if these are all literally brand new then you need to get them all through a couple of heat cycles first of all then see what its like. I personally have never had a problem bleeding a 205 brake system, if you have the air out then you have it out.

[jord294 89]

Just had similar issue with my 405 mi16, and turned out the newish m/c that was already on the car didn't like fresh new brake fluid.

 

Fitted genuine new m/c, re-bled brakes, and now everything perfect

[welshpug 1,646]

If you used a vice to push the rear pistons in then theyre probably shot, they should be turned as they are on a self adjusting mechanism.

[allanallen 528 2 Cars]

If you used a vice to push the rear pistons in then theyre probably shot, they should be turned as they are on a self adjusting mechanism.

Was just thinking this, They need to be wound in!

 

I've seen the Wanky spiral/threaded things inside broken when I've stripped calipers in the past

[camgti 56]

Ok great. Ill check it out. Might need new calipers!!

 

Cam