How to Check Automotive Refrigerant?
2 Answers
Methods for checking automotive refrigerant: 1. Locate and clean the sight glass, then start the engine and activate the air conditioning system. If the refrigerant level in the AC system is appropriate, you should observe clear refrigerant flowing continuously through the sight glass without any bubbles; 2. Perform a temperature check - if both pipes of the dryer feel similar in temperature, it indicates the refrigerant charge is proper. Insufficient refrigerant in the automotive AC system will lead to inadequate cooling performance. For factory-installed AC systems, refrigerant typically needs replenishment every three years assuming no leaks exist. AC system pipes and joints naturally lose about 50% of refrigerant annually, so reduced cooling efficiency doesn't necessarily indicate refrigerant deficiency. When noticing insufficient cooling, owners should first inspect the system for potential leaks.
Having driven for many years, I've found that the condition of automotive refrigerant is primarily judged by the performance of the air conditioning. If the air blowing from the vents isn't cold enough, or if there are strange noises when the AC starts, it usually indicates insufficient refrigerant or a leak. During summer heat, when the car has been running for a while and the AC cools down more slowly, that's also a sign. You can pop the hood and carefully inspect the AC pipes for oil stains or liquid traces—those are signs of leakage. If the refrigerant hasn't been changed for several years, the system's efficiency will drop, leading to increased fuel consumption. I believe having the technician check the refrigeration system during regular maintenance, along with related upkeep like cleaning the condenser, can extend the AC's lifespan. Remember, don’t handle refrigerant yourself—most types are toxic and harmful, and leaks can also harm the environment. It’s best to get it checked at a professional shop—safety first.
