Miles Posted August 25, 2012 Share Posted August 25, 2012 (edited) 240Z with Wilwood 1 inch MC, 280Z booster, Toyota S12-W vented front and 240SX rear brakes. Speed bleeders on MC, front and rear calipers. Brakes are spongy/soft indicating air in the system. Pedal is high until it is pumped a few times and it goes lower with each pump until it is even with the gas pedal and feels songy. Last October I replaced a failed 280ZX MC with a Wilwood 1 inch MC. The MC has been bench bled multiple times and bled on the car. I have run a clear hose from the bleeder on the MC back into the tank multiple times and observed bubbles flowing in the clear hose in the rear brake section of the MC and no bubbles in the front brake section of the MC. The MC where it connects to the booster is dry. Air is getting sucked into the rear section of the MC, but detailed multiple inspections of every fitting on the car reveals no leaks. I bled the front and rear brakes and there were no bubbles. Where could air be entering the the rear portion of the MC? Edited August 25, 2012 by Miles Quote Link to comment Share on other sites More sharing options...
Miles Posted August 25, 2012 Author Share Posted August 25, 2012 Found the problem. The speed bleeder was leaking around the threads. Quote Link to comment Share on other sites More sharing options...
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