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Old 07-27-2008, 04:05 PM   #19 (permalink)
Johnny Mullet
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The best place to patch in a vacuum gauge is a close source to the engine intake manifold. The closer to the engine, the better. Sometimes you can find a plugged port in the intake where you can remove the plug and install the adapter from the vacuum gauge in it's place. Do not patch into the brake booster vacuum source since this will allow the brake pedal to become hard after shutting off the engine.
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