Old Legend Posted July 7, 2015 Share Posted July 7, 2015 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 Quote Link to comment Share on other sites More sharing options...
lschultz Posted July 7, 2015 Share Posted July 7, 2015 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. Quote Link to comment Share on other sites More sharing options...
CT_SPIRIT Posted July 7, 2015 Share Posted July 7, 2015 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 Quote Link to comment Share on other sites More sharing options...
CHIEF DOC 99 Posted July 7, 2015 Share Posted July 7, 2015 Slop some of the Grandkid's bubble maker juice around the valve stem. Quote Link to comment Share on other sites More sharing options...
KenB Posted July 7, 2015 Share Posted July 7, 2015 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. Quote Link to comment Share on other sites More sharing options...
CHIEF DOC 99 Posted July 7, 2015 Share Posted July 7, 2015 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. Quote Link to comment Share on other sites More sharing options...
dk007 Posted July 7, 2015 Share Posted July 7, 2015 Follow "DK's First Law of Motorcycle Maintenance": Take it to the shop. Quote Link to comment Share on other sites More sharing options...
Old Legend Posted July 8, 2015 Author Share Posted July 8, 2015 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 1 Quote Link to comment Share on other sites More sharing options...
firebird77clone Posted July 8, 2015 Share Posted July 8, 2015 Would green slime cause trouble for the sensor? Reminds me, I need to pick some up for the lawn mower. Quote Link to comment Share on other sites More sharing options...
Brock Posted July 8, 2015 Share Posted July 8, 2015 my valve stems were loose and needed to be tightened significantly in both front and rear tires..... Quote Link to comment Share on other sites More sharing options...
dk007 Posted July 8, 2015 Share Posted July 8, 2015 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. Quote Link to comment Share on other sites More sharing options...
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