the flat that isn't punctured....?!??

Repaired a puncture.
Slowly went flat again.
Checked it - couldn't find a thing.
Reinstalled tube. went flat.
Replaced tube - checked old one - still no puncture to be found! Blew it up, and left it overnight - no noticeable deflation.
WTF? Any ideas? (i've pushed the valve in and out a few times in case there was some sort of blockage....)
ta
Slowly went flat again.
Checked it - couldn't find a thing.
Reinstalled tube. went flat.
Replaced tube - checked old one - still no puncture to be found! Blew it up, and left it overnight - no noticeable deflation.
WTF? Any ideas? (i've pushed the valve in and out a few times in case there was some sort of blockage....)
ta
0
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You do not say when leaving tube overnight wether or not it was back on wheel, but assuming it wasn't then there would be very little pressure in tube to vent air through valve, when in tyre and therefore restrained higher pressure = deflation. (Boyles law ?)
No other logical explanation.
Otherwise- "pinhole" puncture that's leaking slowly when under pressure. You could try removing the patch and redoing it but in your shoes, I think I'd probably decide that the failed repair was enough to write off the tube. Not worth the hassle of fixing it again.
Cheers,
W.
I also had a tube that didn't leak when inflated out of the tyre, I ended up having to 'balloon' it to get it to leak through the tiny pinprick hole enough to find.
Simon
retired 9.6kg Carrera Kraken
The Carrera Hardtail combined thread - come on all you Carrera's!
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