I recently changed my front tire on my 2011 RGU and ever since then I have to pump my front brake once b4 it works. I checked the fluid level and brake pads and all check out OK. The brakes worked just fine b4 pulling front wheel. I tried to bleed the brakes with a vacuum pump and got about 2 ounces of fluid out. I can't figure out what could have happened to cause this problem unless it has something to do with the ABS brakes.