THE FINAL WINNER

摘要

April is our air conditioning issue, and also is the last month for our tech tip contest. So, it's fitting that we end this contest with a tip on fittings. A/C fittings, that is. Those pesky little leaks can be caused by a tiny fragment of debris trapped in the valve, worn valve seats or even from a sticking valve we inadvertently leave leaking when we disconnect our equipment. Some loss here is normal; that's why they have caps. But excessive leakage will have your customer back in short order, a little hot under the collar, and not because it's warm outside! Paul Stock, of Stock's Underhood Specialists, Inc. in Belleville, Ill., shares this tip on testing the A/C system fittings before and after you perform A/C service on your customers' cars.