We had a hard brake pedal in this Ford Fusion because there was no vacuum being supplied to the brake booster. After inspection, I found that the vacuum pump for the brake booster was not working. After removing the vacuum pump, found it broke off inside the camshaft and got metal all through the engine. Had to replace the engine on the Ford Fusion to fix the hard brake pedal and a new vacuum pump. it most cases this can be repaired if the engine did not have metal in it. That was not the case with this Ford Fusion. But nothing an engine won’t fix for a hard brake pedal. Good old quality ford product.
