brakes

[noney82]

heres one for you all over the past few days iv noticed that when i brake harder than normal the pedal goes hard and the brakes seem to not work as good as they should do, if i brake lightly they are mint, the discs and pads are mint all round, its a 91 325i with dics and pads front and back. its also got abs. any ideas guys???

[Templ8e30]

Probably got cheapo pads.

Cheers,

Iain T

[noney82]

is that what it could be? the dics dont look cheap

[fuzzy]

if the brake pedal goes hard isnt that a problem with the servo?

[noney82]

everything at the servo end looks ok not losing any fluid or pressure on the pedal

[nickso]

hard pedal and poor braking is usually pad fade.

soft pedal and poor braking is sometimes fluid fade.

if you dont know what type of pads are on i would change them...probably cheap crap

[ian332isport]

everything at the servo end looks ok not losing any fluid or pressure on the pedal

I would also say it's the servo. There's no liquid inside a servo to leak out, so you wouldn't see anything. Could be the non return valve that's failed. This would give varying levels of servo assistance depending on throttle angle and could ultimately lead to no assistance and a hard pedal.

With the engine switched off, try pumping the pedal until it goes hard (each pump uses some of the stored vacuum inside the servo). Once the pedal is hard, hold it down and then start the engine. If the servo is working, the pedal should sink a bit as the servo starts to work.

Ian.

[noney82]

ok i'll try the pumping action and will swap the pads over i'll let you know my findings thank you guys