Why Does Installing an External Tire Pressure Monitor Cause Air Leaks?
1 Answers
When using an external tire pressure monitoring product, sometimes within less than three minutes of activation, the tire pressure of one wheel may suddenly drop from 2.4 bar to 1.8 bar. Subsequently, the receiver part of the tire pressure monitoring product starts continuous beeping, and the display flashes a warning. The above situation occurs because the external tire pressure monitoring sensor was not tightened properly on the valve stem during installation, leading to air leakage. Precautions for installing external sensors are as follows: 1. The principle of the external sensor is to use a push pin to open the valve core, so the air pressure force received by the sensor is the internal tire pressure. The sensor cleverly uses the thread of the fixed dust cap to secure itself to the valve stem. 2. Although the air pressure measured by the external sensor is accurate, the temperature parameter is not as precise as that of built-in sensors, but 90% of the readings are correct (generally differing by 5-8 degrees). Although the contact area of the valve stem with the internal air pressure is small, the convective speed of the gas remains fast due to the high-speed movement of the tire. 3. Although the external sensor must be removed every time you inflate the tire, which is indeed a bit troublesome, the frequency of car tire inflation is low, and the installation process is quick. 4. Regarding the issue of external sensors being picky about valve stems, if the valve stem has missing corners or is worn, installation may cause air leakage. 5. After installing the external sensor, if it protrudes from the tire, it is prone to damage. Avoid passing over protruding objects to prevent scraping and causing air leakage. 8. Always carry the removal tool with you in the car. Otherwise, if you encounter tire issues, the sensor cannot be removed, making it impossible to deflate the tire for repairs or inflate it after patching.
