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

Bled new Wilwood brakes but still spongy pedal

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bfit:
Good quality brake lines they won’t expand to any noticeable extent.

Shane Finn:
Another thought:

Go to a hydraulic shop and buy fittings/bleeders to close the end of the lines to the caliper. That will totally eliminate the caliper from the equation. You are then only dealing with the master cylinder and plumbing.

Bleed the lines as you would a caliper and see if there is any difference. If none, then the fault is entirely in the plumbing and nothing to do with the calipers. If the pedal is hard this way, then the fault is within the caliper. You can then by trial and error figure out which caliper is at fault.

bfit:
The fitting on the caliper end of the brake hose is AN3  ( 3/8  24 JIC ) these are not a common hydraulic fitting ,

Aeroquip 900599-3S  is the plug if you need them.

jimandemma:
Bled the system again, this time with the engine off. First, I bled the bottom nipples and was surprised that air and old brake fluid came out of the nipples, especially when I have put nearly 2 litres of new fluid through. I then bled the top nipples and then top and bottom again. Little difference in pedal feel. Guys, I'm just going to get somebody around with more knowledge to fix this, I've had enough of dicking around with this for 8 days.

Vettech:
What was wrong with the old one - except for the fact that they are G.M.

Are they still serviceable?

Have they been s/s sleeved & overhauled. I can see the paint.

You most likely know where I'm going here.

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