Losing pedal every once in awhile

[kennyd]

Originally Posted by Vegas69

If your caliper is hitting a solid object, it is likely knocking the caliper piston back into its bore. Or, you don't have your spindles bearing tight enough and it's causing excessive brake pad knockback.

i had this same problem on a past project , it was the caliper making contact with the crossmember during a hard turn . pushing it off the surface, just as vegas69 said .