I have searched diligently and can't find any definitive answers. 73 240Z, ZX rear caliper disc conversion w/maxima offset brackets, Toyota S12+8 front 4 piston caliper conversion, new 15/16 MC, new booster for a 240Z.
Problem is my brake pedal has no clamping force when the brakes are applied when the engine is running.
Brakes are bled properly, I think its a bad booster, but I got that new from O'Reilly auto. MC pushrod is adjusted properly.
I am ordering a new check valve to eliminate that.
No leaks on any vaccum lines. No leaks anywhere on the car.
Any suggestions as to why my brake pedal goes all the way to the floor when the engine is running? The brakes will build pressure when the engine is off, by pumping the brakes.