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Registered
Join Date: May 2008
Posts: 104
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brake peddle seemed to be a little hard to push down when started and then soften up
brake peddle seemed to be a little hard to push down when started and then soften up. Is this normal? 1980 auto USA. thanks
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06-24-2008, 05:30 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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Engine vacuum supplies most of the braking force, but until the engine is running you may not have any vacuum. With my foot on the brake I can feel it sink down as the engine starts.
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06-24-2008, 07:36 PM
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Registered
Join Date: Feb 2001
Location: Somerset, NJ USA
Posts: 269
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That is normal from the vacuume booster working. All cars with booster should do this. You can test to see if the booster is working by 1. shut off the car. 2. pump the brakes. 3. The brakes should get harder and harder with each pump. 4. Pump and hold the brakes. 5 start the car. 6. The brake pedal should sink down a little bit.
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1984 911 Euro Cabriolet 1988 928 S4 with Murf Supercharger S1 |
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06-25-2008, 06:03 AM
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