Caster wheel problem

[steves1977uk]

Here's a weird issue...

My Groove chair has a slow air leak in the right caster wheel, so my Brother replaced the old inner tube with a new one but it still goes flat after a couple of hours. The old tube stays up when my Brother pumped it up yesterday and is still hard today. What can be causing the caster do this? The new tube is not pinched inside the wheel anywhere as he checked before he put it together.

Steve

[hank]

Steve
Check valve not sticking in tube
Have you added any sealant inside tube yet
I had similar problem it was the valve not seating
Properly.

[steves1977uk]

Thanks for the help John. The valve was centred in the hole, but now my Brother says it's hissing from somewhere.

Steve

[hank]

Unscrew valve from inner tube
Make sure no crap around seal when
Pressing pin in/out

[Burgerman]

Inflate tyre. Dunk in water. Watch!

[steves1977uk]

My Brother did that to the tube he took out BM, and guess what... No bubbles! And it's still keeping inflated now.

Steve

[Burgerman]

Stuck valve.

[woodygb]

My Brother did that to the tube he took out BM, and guess what... No bubbles! And it's still keeping inflated now.

Steve

Assemble and dunk the wheel/valve.

[steves1977uk]

@BM, yes that's possible.

@woody, I'll get my Brother to do this with the new tube he assembled the wheel with.

Steve

[Burgerman]

And if no bubbles add a little tyre sealer, and test again. THEN fit it.

[steves1977uk]

OK, will do that BM!

Steve

[Burgerman]

Then the other 3 will go flat...

[terry2]

Then the other 3 will go flat...

[Burgerman]

Funny.

But this IS exactly what happens to me.
Doesent matter what I am actually doing. It always causes more work and/or doesent go as it should. And ends up making things worse.

[steves1977uk]

Then the other 3 will go flat...

Don't say that BM!

Steve