How to Deal with Leaking Air Conditioner Valve Core in Cars?

[DeBrantley]

Here are the solutions for a leaking valve core in car air conditioners: 1. Carbon deposits or burns between the valve and valve seat: The remedy involves removing carbon deposits and performing grinding. For severe cases, it's necessary to resurface the valve and repair the valve seat before grinding. 2. Incorrect clearance between the valve and valve guide: Excessive clearance causes the valve to wobble, leading to misalignment and poor sealing when closing; insufficient clearance results in the valve sticking in the guide, preventing proper closure. In such cases, identify the cause of the abnormal clearance and replace the affected guide or valve. 3. Insufficient or broken valve spring tension: This prevents the valve from closing properly. The solution is to replace the valve spring. Additionally, if components like the valve stem have no room for thermal expansion, they may not seal properly. Adjust the valve clearance as required.