Technical Tips > Brakes, Suspensions, Steering, Wheels & Tyres

Bled new Wilwood brakes but still spongy pedal

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77CVT:
If you have rubber lines, clamp all 4.  If the pedal is still soft = master cylinder. 

If it is hard, get a helper and release each corner one at a time.  The pedal should only move a small amount if it is ok.  Re-clamp and do the next corner - if a corner you release moves the pedal a lot then that is your culprit.

bfit:
if you have a second person .
crack the fitting at the master cylinder and then get the helper to slowing depress the brake  see if any bubbles are present start with the rear brake line first  then the front.
Bfit

jimandemma:
OK, tried gravity bleeding to no avail. Tried the helper depressing the pedal again and now got a whistle from underneath when cracking the nipple and brake warning light came on. Tried again, whistle gone but brake warning light on. Fluids are normal front and rear of master cylinder. Starting to give me the sh#ts. Pedal is spongy to an inch off the floor. Pumping does nothing to the height of the pedal, hold, crack the nipple, no bubbles, pedal to floor, tighten nipple. No change with all 4 corners. I'll try the master next, cracking the lines.

bfit:
Remove the switch sender and reset the valve,
That can be the problem, I have not seen it but I have read  that others have had this as the problem

jimandemma:
No worries, will try tomorrow.

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