Ke Braking Troubles

[pebbles]

hey everyone
ive noticed latly that when driving my Ke30 everynow and then the brake pedal will go in about 10 cm more than usual before it really even starts to brake, ive noticed it doesnt happen often and when it does, its usually when i park or when ive just started the car?
anyone got anything that they think it may be?
as i said it seams ok when the engine has been revved before braking, asin when ur driving .... not parking, possibly a brake booster problem but yeh anyway, any1 got any ideas, it has happened before when ive had the car on for a while and its not parking.
thx..

-Dearman

[ae71]

is the valve that gose from the mani to the booster working correctly? to see just pull the hose off of the booster (when the car isnt running) , if you hear air suck into the booster then thats ok and so is the booster.

also check your wheel cylinders, they may be leaking if they havnt been replace in a while.

[driftke70]

check your vacuum line to the booster is on properly and isnt cracked.

if when you put your brakes on hard and fast they work better that means you need new seals in your brake booster. When you push it hard and fast they swell up and seal well but when you push it slowly all the fluid slowly leaks back past.

[Jonny Rochester]

I would say you have master cylinder creep. (As long as you have no external leaks). Boosters do not fail very often. You need a new brake master cylinder, or get yours reconditioned with a hone and new seals.