Technical Tips > Brakes, Suspensions, Steering, Wheels & Tyres
Bled new Wilwood brakes but still spongy pedal
bfit:
In the older cars pre 73, the original valve, people call a proportioning valve>
Is just a manifold with a spool to trigger the switch, in those bodies the oil will pass through, with the spool shuttled either way.
later vehicles have what looks to be a proportionating valve in rear and a metering valve in the front distribution port
jimandemma:
OK, so I've got the pressure bleeder kit
jimandemma:
I've pressure bled all top nipples at 12 PSI, solid fluid from all nipples front and back. Pedal the same!!!
Looking at changing the Master Cylinder as I think I have torn the seal with the pump and hold method of bleeding pushing the pedal to the floor.
wabco40:
Was the master cylinder new or the original?
jimandemma:
New in 2009, 5000 miles on it since. No problems prior to the upgrade.
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