Vehicle & Technical > Suzuki

brake help!

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gate78:
hey guys, just thought id post a problem im having, with luck somebody may solve my problem.

Just put some new front and back brake pads (had rear disk conversion ages ago) and although they were a slag to fit, due to rust and mud, and a seized calliper on the back i got them on, and they all seem to be grabbing with no obvious leaks. The brakes were working ok before the new pads (excluding the seized calliper) but now the brake pedal needs pumping before the brakes work. i have bled a few litres of brake fluid through each calliper in the correct order, and no more air is coming out.

I have also now noticed a kind of hissing noise, like pumping a bicycle pump when the brake pedal is pressed, this comes from around the brake fluid reservoir. there are no leaks alond the whole system that i can see, and as they worked before surely it is unlikely something just broke?!? Im still just hoping it is air in the system, but if so where could it be and how do i get it out?

any help, suggestions or ideas much appreciated! what have i done wrong? any thing i can do to diagnose a faulty component? Im very reluctant to put it into a garage unless i exhaust all my options.

cheers guys in advance!

Mart:
have you checked the seal ring on the reservoir cap? might be perished so your not holding the pressure, just a thought

gate78:
just had a look but the seal looks good as new. with the engine running if i press the brake pedal 2-3 times then i get resistance and the pedal feels normal, and the brakes work. as soon as i release the pedal, and press again, the resistance is gone and the pedal drops to the floor (the brakes do still work like this, but id never stop fast enough in an emergency).

thanks

keep the ideas coming guys
 :D

P.R.Howler:
Its good practice to change fluid once a year too, fluid gets too much moisture in it and becomes less reliable, sounds like you have air in the system m8, check bleed nipples are fully screwed in,ie, no crap behind them.
When you push the pistons back into caliper you can sometimes nick the rubber seal, if you get too much crap behind the dust cover this will break down the seal too.

generation-x:
hi m8 wot rear calipers are u using?
if sj front ones did you move the rears so the bleed nipples are at the same position as the fronts else they wont bleed right

let us no

simon

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