I've had an issue where when I apply the brakes, the pedal goes to the floor. I haven't changed anything as far as the brakes go. I spoke to the mechanics at work and they gave me a couple of suggestions. After checking those things, I decided the master cylinder was most likely the culprit. I ordered a new Willwood 1" bore,
http://www.wilwood.com/MasterCylinde...mno=260-8555-P .
Drove the truck to run some errands on Wednesday, before work. On the way home, I noticed a funny smell. When I got home, I opened the hood and saw there was coolant splashed all over the engine. It was bubbling out from a rather long crack in the upper tank.
It's a Champion and I bought it off of eBay. I contacted the store. They are up in Lake Elsinore. So, I get to drive up there to see if they will replace it. It's less than a year old.