Sticking Brake Pedal

[Sinbad 16]

The pedal sticks on my 1.6 gti,i have removed the master and can pump that by hand,it pumps and returns so thats ok.

With the master off the pedal is no different,i have spent the last hour spraying wd40 on all moving parts but it just will not return!

Could i be missing a spring off the pedal box? like on the clutch pedal??

Or should the spring thats on the clutch pedal be on the brake pedal??

This car in the past has been worked on by absolute reprobates so anything is possible!

[Sinbad 16]

anyone?

Just bled them up and when the nipple was open with the one way valve on,some of the pumps had to bring the pedal up manually.

Its bled up now and pedal gone hard as normal,just dont want it to not return for reasons which are obvious!

[Liquid_106 97 1 Cars]

Just had a look on service box and the doesn't appear to be any spring involved in the pedal mechanism. Have you had the pedal off to check the , spacer / bushing / cap screw for any signs of ware or damage?

[Sinbad 16]

No i couldnt see one on there either.

I havent but it seems to be ok now,when it did it was when there was a big blast of air coming out the bleed nipples,so am guessing it was just full of air.

[Liquid_106 97 1 Cars]

One less thing to worry about then

[Sinbad 16]

Im sure it will be replaced by another worry lol

[Sinbad 16]

This started after the mot today,seemed worse when warm,any ideas??

[Sinbad 16]

anybody?

[EdCherry 34 1 Cars]

Its a pretty simple system so whats the actual problem?

 

Are the brakes binding or is the pedal not returning?

 

If the pedal isn't returning then its likely to be a master cylinder issue or mechanical binding on the servo mechanism.

[Sinbad 16]

The pedal isnt returning when it does it,after the recovery home,the pedal worked fine,as per the drive to mot and during mot,then after,when it was warm it stuck.

With the engine off the pedal feels fine,when running it sticks???

[Slo 283 1 Cars]

unbolt the master cylinder from the brake servo if the pedal is still sticking renew the servo if its fine renew the master cylinder dont even think about bolting it back on brakes are THE most important parts of any car

[Sinbad 16]

Cheers mate,and dont worry,it aint going anywhere til its sorted.

Just out of interest,can you still get the masters/servo's new? if so how much?

[Slo 283 1 Cars]

autofive do both 1.6 £128.05 and 1.9 £142.93

peugeot 4535F0 £163.68

 

you should also check the one way air valve on the front of the servo, when the pedal sticks in next yank the valve out quickly (be careful not to break it) and see if the pedal releases

[Sinbad 16]

It didnt release,both running and off the pedal stayed down.

[Slo 283 1 Cars]

well theres the culprit then and an absolute dog to change

[Sinbad 16]

Cheers,i know theyre trash to change.