If no bubbles form, then your valve stem is likely not the culprit of the leak. The valve stem is leaking if there are little bubbles that form at the base of the stem. If you take some water and a blob of dish soap together and rub it over the uncapped valve stem, you can test for a leak. Prior to changing your valve stem, verify that it’s actually leaking first. ![]() When you pick up your new valve stem, you’ll also need to get a replacement valve core and valve stem tool.Ī valve stem tool looks like a plus sign. Get the Right Toolsīefore you start replacing anything, make sure you have the right tools. ![]() If you bring it to the shop, it will cost about $30. New valve stems cost about $10 dollars to repair if you do it yourself. Replacing your valve stem is an easy task to do, even if you aren’t a mechanic. Let’s take a look at a complete guide for tire valve stem installation and replacement. There are no reasons to remove your tire when replacing your valve stem - and the shop doesn’t need to do it either. Is your tire leaking and you can’t figure out why? If you’ve checked for a nail but don’t see one, it may be time to complete a valve stem replacement. Read more from Roger Marble on his blog at or on / Valve Stem Replacement 101 Valve Stem Replacement 101 Have a tire question? Ask Roger on his new RV Tires Forum here. I think that these “extenders” potential to leak is what has led to the negative opinions of extenders. This might allow the extender to vibrate or unscrew, which can develop into a leak. The downside of these extenders is that it is hard to “attach” the outer end to stabilize the extender. Some people have used a stiff extender instead of the flexible hose. One advantage of my using a TPMS was that I was able to see the slow (2 – 3 psi per hour), and after a close inspection of the hose extender it was confirmed. The rubber in any seal can eventually fail due to “old age.” This applies to hoses, rubber valve stems and any other rubber part in your car, truck or RV. As with all rubber parts, I had one of my hose seals fail after 9 years. There are small rubber “O” ring gasket seals that can be torn, resulting in a slow leak.ĥ. Pushing an air chuck or pressure gauge on an extender can generate a lot of force which can bend or loosen the attachment.Ĥ. When adding air you should hold the hose so you are not loosening the attachment point. ![]() I use pop-rivets and the small ‘L” bracket that comes with the Wheel Master stainless steel hose kit (#8001 or #8005, depending on wheel diameter), like this (shown with TPMS sensor):ģ. The outer end needs to be SOLIDLY attached. I screw the hose on till the air stops leaking, then tighten about 3/4 to 1 additional turn. That means no leaks (test with some soapy water) and not over-tighten. ![]() You can use the “other flavor of extender” – a flexible “hose” extender – BUT you REALLY need to pay attention to the following:ġ. The above doesn’t answer the question for those that use TPMS or want easy access to allow measurement of tire pressure. The other end you Pull onto the valve for the outer tire. If you have short metal stems as shown above and a “dual foot” inflator adapter, you should be able to get to both the inner and outer short stems. It will help if you have a “dual foot” inflator tool, like this:
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