How do you quickly test the basic operation of a vacuum brake booster?

+1 vote
asked May 7, 2018 in Other-Cars/Transportation by Plexatie (400 points)
How do you quickly test the basic operation of a vacuum brake booster?

1 Answer

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answered May 11, 2018 by Grahlu (51,270 points)
A good way to quickly test out a brake booster is to start the engine of the car and let it idle for about 2 minutes and then shut the engine off and then press the brake pedal down and hold it for 30 seconds with the engine off.

The brake pedal should hold in the down position and if it doesn't lean it's either a vacuum leak or a bad brake booster.

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