After replacing my brake booster and master cylinder my brake pedal is very stiff and the brakes don't work that great. Any ideas

 

Vacuum line hooked up? (both ends....)

 

As far as I can tell yes. It's not so stiff it doesn't move just hard and seems to take a lot to stop the truck. Did I maybe not bleed it enough?

 

Oh and also my brake light is on. Not the abs too just the brake light. Sorry should have added that

 

Figured out the brake light issue. Must of bumped the e brake when I was under the dash. So that's off. But I'm still not sure about how stiff the pedal is. Line is hooked up on both ends and it's a reman booster and a new master cylinder so I'm not sure if it's just that's it's so new I, not use to it or if there's air in the system or what

 

Subscribed I'm having the exact same problem. Mine only travels about 1 inch and not much past that with out a ton of force. Even after putting in new booster in yesterday.

 

A new booster should give you a pedal that if you look at it the wrong way, your brakes apply. Should take very little effort to get some serious braking. Air in the lines will make the pedal spongy. Rear brakes out of adjustment will yield a pedal that goes down a long way before you actually start getting any braking action.

Verify that you are getting vacuum AT the booster end of that line. If you are, I would highly suspect a bad booster, as it sure sounds like you aren't getting any vacuum assist there.