Tyre/valve slow leak

[steveloft]

I have a slow leak on one tyre, it's leaking from where the valve meets the wheel. It's a bit tricky for me to get to a garage, is it likely that I can do something about it without taking the tyre off? I wondered if I could deflate it and re-seat the valve or something?

You can tell I know nothing about tyres, can't you?

Steve

 

[jims-terrano]

Is it definately the valve that is leaking? if so where from the rubber stem or the actual brass valve mechanism inside the stem.

If it is the rubber stem it is basically a bit like a grommet with a lip on the inside of the wheel rim. They are only meant to fit from the inside of the rim so I doubt you could get the old one out and a new one in without deflating the tyre and breaking the seal between the tyre lip and the wheel rim. May be if you could deflate and then stand on the edge of the tyre to push it away from the wheel rim you could then get to where the valve fits but you will need a good source of compressed air to reseal and inflate the tyre.
If it is the brass valve then you can simply unscrew it and refit one from another wheel.

Try a solution of washing up liquid and water to find where it is leaking from.

Jim T

 

[steveloft]

It's definitely between the rubber stem and the wheel rim. I guess I'm going to have to take it to a garage.

Steve

 

[jims-terrano]

May be a can of tyre weld but then again it may be easier to reach the main land for a garage rather than getting a can of that horrible stuff.

Jim T

 

[supertaff]

As an "old" tyre fitter, if you do not have a proper bead breaker for breaking the rim seal,- take the wheel off the vehicle, take the valve out of the valve stem to release all the air - use 3 or 4 wooden wedges and hammer them between the tyre wall seal and rim of the wheel, pushing the tyre wall down with your heel, and working your way around the tyre until the bead seperates from the wheel rim.
It would be worth checking to see if someone has put a tube inside a tubeless tyre, as often when a puncture occurs in a tube inside a tubeless tyre, the air will not come out of a puncture in the tyre tread, but out between the valve stem and valve housing hole on the wheel.
Look at the valve stem base (Where it goes into the wheel) - if the valve stem does not hide the hole through which it sits and you can see the stem going through the hole - you have a tube in there , but if the base of the stem is bulbouse and covers around the hole, it is tubeless. New tubeless valves are cheap enough, and should be easy to get, even as far north as you are.