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Old 10-21-2019, 11:37 PM   #1
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Check valve for brake booster? (Automatic)

I currently don't have a check valve for my brake booster in my automatic car. Is this dangerous or is this something I could leave off my car? Could not having a check valve in brake booster cause a lean condition? Should I just pop it back in?
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Old 10-22-2019, 12:32 AM   #2
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I believe it’s there so that if your engine stalls, you still have a few power-assisted brake pedal applications before totally losing brake assist. Leaving it out is a bit of a liability.
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