Horrible brake pedal feel in hdj80

[YOGI001]

G'day all,

I have been experiencing a very spongy feeling in my brake pedal lately.

I had a vacuum leek in the booster so got that rebuilt and add a double diaphragm and replaced the master as well. She has new pad and rotors less than 10000 km old. Braided brake lines and a pro portioning valve extension all equally matched. When the booster came back and it was all bleed up it still has that horrible pedal feel that feels like inches before I feel pressure. The car stops but not like it should.

Has anyone had similar experiences and possible solutions.

Cheers guys

[91Mav]

Does the brake pedal pick up quicker if you pump it a few times? If so, re-bleed the system including the preportioning valve. If the pedal's heavy, check the vacuum line - you would wanna hope the rebuilt booster's fine. I've never had a diesel so I'm not sure if the alternator can have problems with the vacuum.

Did you get bendix or ferodo pads? Personally, i hate them both. Get some EBC Green Stuff pads - they're $200 but work well.

[Clanky]

There may be a bleeder nipple on the proportioning valve to help get air out.
I had a similar problem in my pootrol and in the end I took it to my mate and all he did was bled the p.valve & rears and all good.
It was only a problem after I did major work like you have done and it had a lot of air in the system

See how you go

[shorty_f0rty]

check your vacuum pump.. there are bakelight blades in the vacuum pump and they can disintergrate leaving you with little or no vacuum.

You should be able to take a vac line off near the booster or vac canistor and check it with your finger over the pipe. with the engine running/

other thing to check is a one way valve in the vacuum canister, it can leak vacuum if faulty.