In this video I show how to test for a bad brake booster, check valve and Vacuum pump. I show the steps I took to diagnose 100% a faulty brake booster in a Bmw N46 2.0L
This BMW had very bad braking with a hard brake pedal caused by a failed brake booster. The booster failed due to oil contamination of the brake booster diaphragm causing it to rupture. The oil came in through the the vacuum pump and along the vacuum line.

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Disclaimer:
GerardBurke is a qualified motor technician who has completed modules & courses in manual handling and all aspects of workshop safety. These videos are not intended to be used by anyone who is not trained and or qualified to carry them out.
Due to factors beyond the control of GerardBurke, I cannot guarantee against improper use or unauthorized modifications of this information. GerardBurke assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. GerardBurke recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of GerardBurke, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not GerardBurke.

#BMW #HardBrakePedal #BrakeBoosterTesting

The BMW N46 is in the following models listed below
BMW 118i E87
BMW 120i E87
BMW 318i E46
BMW 318i E90
BMW 320i E90
BMW 520i E60
BMW X1 E84
BMW X3 E83
BMW Z4 E85