I just bought this truck. It has disc brakes on the front and drum brakes on the rear. When I brought it home, the brake light was on and the right front brake was dragging. I replaced the front calipers, hoses & pads. I bled out the air, and all looked fine.
Today I was driving it around, and the brake light came on and the brake peddle went spongy. I pumped it a bit and the brake light went off and the peddle felt fine again. I’ve never experienced this before. What do you think? did I just burp a a bit of air out? is my master cylinder wacky? Perhaps I need to flush the brake system out and put in clean brake fluid.