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Brake Master Cylinder Bleeding

B-rice

By B-rice,
in General Maintenance

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B-rice Mentor

B-rice

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This question has been asked a few times but no direct answeer.Bled the brakes four times not a single bubble came out after the third time. I rebuilt my calipers and put new brakes and rotors.

what do i do to bleed the master cylinder as the pedal is very soft goes right to the floor but somehow manages to stop the car. Heard some say i push the pedal to the floor and someone cracksthe bleed nipple. Looking aroumd the master cylinder and couldnt find it .Any help is appreacited trying to avoid a shop doing this for me.

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https://www.sau.com.au/forums/topic/453542-brake-master-cylinder-bleeding/
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GTRPSI Mentor

GTRPSI

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Engine off when bleeding.

Someone pushes the pedal, someone else cracks the bleed nipple open, leaves it open till the pedal hits the floor, close the nipple, lift the pedal.

Check your ABS which also should have bleed nipples.

B-rice Mentor

B-rice

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Got sick of the soft pedal feel so got a bit innovative. Made a pressure bleeder. Initially it was a fitting to a spare lid.The seal wasn't right enough so fluid spilt out. So ended up making a chain pressed perspex with rubber to seal. This worked a treat managed to pump the system to 13 psi and cracked all this zero bubble came out.

Before this I took out the two lines that go to the ABS unit and got an assistant to depress the pedal to squirt fluid then stuck my fingers to block the holes then got the assistant to release. This was done about four times. My pedal was still soft.Then my old man told me to find a secluded area where I could lock up the brakes once or twice.This worked a treat as there was air in the ABS unit.

Proper way to do it is to use the consult. But Nissan will charge me $300+ for that.

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