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How can you tell if you have a bad power booster in an 86 z28?
Wiki User
∙ 13y ago
If you push on the brake pedal and the engine RPM goes up that would be an indicator. After running the engine for a while shut it off and wait a few minutes. Remove the vacuum line and connector at the booster. You should hear a burst of air rushing in. This would indicate that the booster is holding vacuum....which is what you want. You can also start the car and depress the pedal. Turn off the engine. If the pedal stays in the same position for 30 seconds this would indicate the booster is air tight. If it fails any of these tests it's a good bet you need a new one.
Wiki User
∙ 13y ago
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