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Leaking Valve Core?


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So over the weekend I checked the air pressure with an actual tire guage sunce the tpms lit up and it showed 37 psi as opposed to the 41 it's supposed to be.

I filled both tires but had a difficult time with access to the back one, but got it filled to 41.

Started to ride the bike this morning and the tpms lit up and showed 27 psi in the rear tire. Would it be the valve core leaking? If so could it be loose or need replacing. Any suggestions?

Thanks

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They will leak sometimes but over all they are pretty reliable. You could have something that punctured the tire resulting in a slow leak. Sometimes a slow leak is hard to find. If you can get the rear wheel off the ground squirt some water on it while you turn it looking for leak also check valve stem. Easiest way to find a slow leak is putting the tire in water and look for a bubble of air.

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They will leak sometimes but over all they are pretty reliable. You could have something that punctured the tire resulting in a slow leak. Sometimes a slow leak is hard to find. If you can get the rear wheel off the ground squirt some water on it while you turn it looking for leak also check valve stem. Easiest way to find a slow leak is putting the tire in water and look for a bubble of air.

soapy water

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There is also the TPMS sensor to check - if I recall correctly Brock had an issue with his tires going flat overnight.. I think it was the TPMS sensor in the wheel but I could be mistaken.

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TPMS sensor unit is mounted inside on the opposite side of the wheel rim from the valve stem.

 

Don't see how it could cause a leak all by itself?

 

A rim leak at the bead would be more likely.

 

We have seen other valve stem leaks on KM Chief tubeless set ups in the past.

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Follow "DK's First Law of Motorcycle Maintenance": Take it to the shop.

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my valve stems were loose and needed to be tightened significantly in both front and rear tires.....

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DK I might consider that, except my dealer is 200 miles away in Daytona. But then, I could take it there and go babe watching while they're working on it :)

 

You can probably take it to any local motorcycle shop or tire store and I'll bet they'll figure it out right away.......if it's not the TPMS and you have a real leak.

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