Brake pedal hard during start-up

[ExplodingCake]

Here's the thing , i got my MC replaced 6 months ago also with new brake pads. Starting 2 weeks ago ,i noticed that my brake pedal is rock solid when i start the car up. Then the pedal goes down when the car starts. After that brakes work fine , no brake pressure loss , no brake fuid leaks. Turn the car off and let it be after a couple of hours then its hard again. I was just wondering if this is normal or there's some sort of malfunction?.. Does it needed to be re-bleed or the brake booster needs to be replaced? Great help would be appreciated. Thanks in advance By the way , my brakes are non-abs.

[ExplodingCake]

Good Morning BUMP!

[customchord]

All it is is that your brake booster doesn't haven't any vaccum pressure from the engine. It runs off the vaccum of your engine so if it isn't started you don't have power brakes. It's like driving a 50's or some 60's cars.

[sirs1ayer]

if the engine isn't on. you don't have power breaks
aha its fun to put it in neutral and turn the car off and go with manual steering and breaks. fun stuff.

[91blk4thgen]

Test your brake booster and the check valve for functional and leak test.
If everything checks out ok then I really think that this is normal operation of the booster.

All the best.

[monkeydude3]

Check the vacuum line to the booster and the check valve which will be in line somewhere.

Technically, on a vacuum boosted brake system they are supposed to have enough vacuum HELD in them to stop you completely one time safely if the engine stalls. Sounds like either there is a vacuum leak or your check valve may be bad. Either way simple fixes

George

[ExplodingCake]

ah thanks you for your advices.. sorry i havent been on for a while.. seems my brake booster is ok , imma give it 1 more week to see if everythings ok.
i gave it the brake booster test , it went well.

thanks again..

now i must go.

*loyal slaves chants on background while leaving*