A vacuum gauge is a valuable tool in diagnosing problems with your car. From poor performance to bad braking, the vacuum gauge can help you find the root of many problems. Mark Simpson demonstrates how to perform an accurate engine vacuum test.
4 Responses to “Diagnosing Problems with a Vacuum Gauge”
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4:48
Classic Car Maintenance Tips: Wiring Harness
George Vondriska teaches you how to install a new wiring harness under the dashboard of a 1956 Chevrolet 150. He demonstrates each of the essential classic car maintenance tips and techniques you’ll use, including the mounting and wiring of the fuse board.
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8:29
Classic Car Restoration Process: Bench Soldering Dashboard Components
Brent Ackley and George Vondriska walk you step-by-step through a classic car restoration process of bench soldering dashboard components for a 1956 Chevrolet 150, teaching you how to properly wire the components and connect the terminals. They show you a sample schematic for a standard component, and emphasize that each one will be different, so…
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3:04
Installing Plug Wires Into Your Classic Car Engine
Brent Ackley teaches you how to install plug wires into the engine of a 1956 Chevrolet 150. He walks you step by step through the installation process, demonstrating the essential classic car maintenance tips and techniques you’ll utilize, including stripping the conducting material and using a ratcheting crimper to achieve the amount of torque you…
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5:19
Crimping on New Battery Terminal Connectors
Whether you’re relocating your battery, making custom length battery cables or powering up a huge audio amplifier in the trunk, knowing the right way to cut and crimp large electrical cables will ensure your new upgrade will work as you intended. Mark Simpson demonstrates how to cut copper cable and crimp on new battery terminal…
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Shouldn’t the needle be steady? It looked in the video as if it was shaking a bit. I am in the process of testing mine and at the beginning mine was shaking as well, but I had most of the vacuum hoses connected. Then my friend recommended to test it again after caping some of the vacuum ports and I got a steady reading.
What about a flathead Mercury motor, master cylinder is under floorboard?
Hello Ralph,
You can take a vacuum reading from any plenum port off the intake manifold (although not including, coolant passages or exhaust crossover passage).
I have also seen some carburetor base plates for Mercury have vacuum ports for Columbia two-speed rear axles.
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Mark
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Good video and nice chart. Downloaded the chart and printed it out. Going to have it laminated.