From an effectiveness standpoint, a belt-driven vacuum pump provides more vacuum to relieve the crankcase pressure, thus eliminating oil leaks and allowing the piston rings to seal better.

For anyone else making sensitive pressure measurements in a vacuum chamber, [Advanced Tinkering] made the project code available on a GitHub page.

The volumetric efficiency table is probably the most important one in any ECU.The vertical axis is engine load, in this case, ...

Cool idea: NIST’s Daniel Barker, Steve Eckel, Jim Fedchak, Julia Scherschligt and colleagues have developed and tested a technique that uses cold atoms to measure ultralow pressures. (Courtesy: NIST) ...

The King of Random examines what vacuum packing a human teaches us about pressure. Home Depot responds to nationwide boycott Paul Simon cancels concerts to undergo emergency surgery ahead of S.F ...

As for the exterior of the car, I wouldn’t use a pressure washer. The stream is a bit too strong and might damage paint and weather stripping.

Breathers alone will relieve some but not all crankcase pressure. Header e-vac systems and vacuum pumps are also an option but are generally not practical on street engines.

Vacuum air servo is now launched overseas after decades of practices in Japan. Here shows the features and product showcase with 50-sec movie.

These vacuum boosters can sometimes “whistle” as they draw in atmospheric-pressure air through one-way valves to assist the inner diaphragm motion.

Product showcase with vacuum air servo embedded is introduced. The article contains the motion, component, technology and practices.