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Valve stem on tire leaking8/24/2023 ![]() This article was co-authored by Howard Fleischmann. ![]() This article has been viewed 274,213 times. Howard is often referred to as “The Car Guy” for local TV stations and is a regular on TV’s Channel 3 Sunday, Good Morning Arizona monthly. Howard’s dedication to Community Tire Pros & Auto Repair has earned their team multiple awards and features including the 2021 Phoenix Magazine AZ State 48 “Best of the Best!”, the 2020 “Best of Phoenix” in Auto Repair, the 2013 Master SBD award, the 2013 National “Top Shop” award by Tire Review, the 2012 Diversity Champions Phx Business Journal, the 2009 BBB Ethics award, the 2008 Phx Chamber of Commerce Impact Award -” Small Business of the Year”, and the 2008 ASU Spirit of Enterprise award. ![]() Howard specializes in full-service auto repair and tire replacement and care for domestic/imported vehicles and large trucks. Howard Fleischmann is an Automotive Tire and Repair Specialist and the CEO of Community Tire Pros & Auto Repair, with ten locations throughout Phoenix, Glendale, Yuma, and Casa Grande, Arizona. If you find a mechanic who does this, you have found a keeper! Any mechanic that flags this issue as part of a used vehicle inspection is one who understands how important it is to be thorough even when it comes to seemingly insignificant things.This article was co-authored by Howard Fleischmann. If you take your vehicle in for a routine service that includes checking the tire air pressure, the valve stem caps should be properly tightened, and should be replaced if missing. When the time comes to put your snow tires on, or to replace your tires, you may have to replace your tire pressure monitor sensor if the valve core has seized into the stem, possibly making your wallet an extra $60.00-$80.00 lighter than you expected! If your vehicle has a tire pressure monitoring system (TPMS) it is even more important to have a valve stem cap to keep the moisture and dirt out. It is also possible that the vibrations created by the spinning of your tires over thousands of miles caused the cap(s) to become loose and fall off. Now where might that little valve stem cap have gone? What probably happened was the last time you took your vehicle in for service your tire pressure may have been checked, but the valve stem cap may not have been put back on. Most caps, however, are a softer plastic designed for protection only and are not equipped with a separate seal. In addition, the rubber washer or seal prevents the cap from loosening and falling off due to vibrations by acting as a cushion between the cap and the valve stem. This type of cap protects from dirt and moisture and also helps prevent air from escaping from a slightly leaking Schrader valve. Metal, and some higher quality hard-plastic valve stem caps, often have a rubber washer or seal inside to help make an airtight seal. It is designed to protect the Schrader valve, a valve stem into which a valve stem core is threaded, that keeps the air or nitrogen in your tires.Ī valve stem cap is important for the Schrader valve because if one is not fitted, dirt and moisture can enter the inside of the valve stem, potentially jamming or contaminating the sealing surfaces and causing a leak. The valve stem cap is not just a little plastic or metal cap to make the valve stem look nice. Something as small as a tire valve stem cap may seem insignificant, but it actually serves a pretty big purpose. Or maybe you just didn't think about it at all.Įverything on your vehicle that was equipped by the manufacturer serves a purpose, big or small. Maybe you were worried and went to your local auto parts store to buy a replacement cap. Have you ever gone to check your vehicle's tire air pressure and found the cap that screws on the valve stem was missing on one or more tires? You may have thought you were lucky because you had easy access to the valve stem, thereby making it easier to add air to your tires.
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