What is the consequence of not having a reliable vacuum gauge?

A reliable vacuum gauge is critical for accurately assessing the vacuum levels in a vehicle's braking system. When the vacuum is not monitored properly, it can lead to significant brake issues going undetected. For instance, if there is a drop in vacuum pressure—perhaps due to a leak or a failing brake booster—the driver may not realize that the braking system is compromised until it becomes a safety hazard. This situation can result in reduced braking efficiency, longer stopping distances, and ultimately a higher risk of accidents.

By having a reliable vacuum gauge, drivers and technicians can promptly identify any vacuum-related problems affecting the brakes, ensuring timely maintenance and repairs. Thus, the inability to detect such issues due to the lack of a reliable vacuum gauge can severely impact the safety and performance of the vehicle.