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metalharo9187 04-26-2013 08:37 PM

brake pressure issue
I recently did work to my brakes, I have checked and double checked to see if anything is leaking. It's not. I bled the system and have pressure on the brake pedal when the vehicle is off but when it is running I need to pump it a few times. Any ideas, I think my Master cylinder is bad.

wrangleryj90 04-26-2013 08:58 PM

Do you replace calipers? If so make sure they are on the right side also make sure they are bled

metalharo9187 04-26-2013 11:55 PM

No I didn't replace calipers I patched lines. No leaks now though.

wrangleryj90 04-27-2013 12:17 AM

I would bled till you have new fluid if that doesn't work replace the master

metalharo9187 04-27-2013 01:25 AM

I bled for a while and I even put a vacuum fun on and didn't get much out of it.

kik 04-27-2013 07:46 AM

I would replace master cylinder. Probably an internal seal leak.

wrangleryj90 04-27-2013 12:43 PM

Also make sure the rear brakes are adjusted correctly that can cause this problem too

metalharo9187 05-03-2013 10:27 PM

Ended up it was the master and there was also a little air in the calipers

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