Air in Brake Fluid (Ford Fiesta MK5, late 2002)

shaun_from_Africa

enfield_freddy wrote: »

2: if the fluid had "boiled" (speculation) why is the fault not there 100% of the time?

If the brake fluid is fairly old it will have absorbed some water over the years (one of the properties of brake fluid is that it absorbs water) and when the fluid boils, this water will turn to vapour which is compressible and will cause the problem.
When the fluid cools down, the water vapour goes, hence the problem goes as well.

enfield_freddy

we are not talking about a farrari with carbon fibre brakes , its a flippin fiesta going down the high street!


IF and only if its a big if , the OP needs to get a set of 4 brake shoes and a litre of brake fluid from euro carparts and get a friend to help him change the shoes and flush the old fluid thru.


I suspect the price is a halfrauds "starting" price and there will be multiple other items needed to perform a guarenteeable fix

shaun_from_Africa

enfield_freddy wrote: »

we are not talking about a farrari with carbon fibre brakes , its a flippin fiesta going down the high street!

I realise that but I was simply answering your question "if the fluid had "boiled" (speculation) why is the fault not there 100% of the time?" and the reason is due to the water in the fluid boiling and turning to steam.

I fully agree with your point that Halfords are clutching at straws (or simply making it up as they go along).

enfield_freddy

shaun_from_Africa wrote: »

I realise that but I was simply answering your question "if the fluid had "boiled" (speculation) why is the fault not there 100% of the time?" and the reason is due to the water in the fluid boiling and turning to steam.

I fully agree with your point that Halfords are clutching at straws (or simply making it up as they go along).

cheers , we will await the OPs return , I pray that halfrauds are not working on it ,

enfield_freddy

any update on the problem and repair yet?

[Deleted User]

20aday wrote: »

Had no problems whatsoever from where I work until I got home nearly. Brakes were fine and all of a sudden they went spongy.

Could be moisture in the fluid.

Bleed the system all the way through, with fresh fluid.

Oops. Beaten to it.