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Q: test brake booster on 1998 Dodge Dakota

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to test the brake booster can u take the vaccum hose off from the brake booster and see if it release vaccum pressure?
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mechnics have diagnosed my small vacuum noise, which disappears when I depress the brakes, to the booster. my engine idles smoothly, brakes smoothly, but I sense the loss of acceleration. booster?
What makes you think you have a problem with the brake booster? If the diaphram inside the booster assembly was ruptured, the engine would barely, if at all, run at idle.
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