Losing pedal every once in awhile

[Ben Banks]

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.

Thanks Todd, so you are saying when my A arm hits the caliper it may be knocking the piston back into its bore. Would this cause my pedal to go to the floor?