[alamara967]

Hello everyone this is my first time posting on a forum so if i’m doing something incorrect im very sorry but i have a 2007 bmw 328i with the N52 motor. one day i was driving and my brake pedal went very stiff and i could barely stop. a few moments later it went back to normal. later that day the brake pedal went stiff again and did not go back to normal. i went under the hood and located my vaccum line from the vaccum pump going to the brake booster. i started the engine and took off the vaccum line only to realize there is no vaccum what so ever even with the engine started. there is a very slight vaccum but it is very slight. i took apart the vaccum line and made sure it had no cracks or leaks. Could this be my vaccum pump located under the intake headers? i have no idea where to start or what tests i can do. there is very little to none vaccum going to the brake booster. please help!!!