Thanks blknight, that's what I initially thought, but it is definately not blocked - i have cleaned and checked it many times. The pressurised air is trapped only in the hub. The pressure is released only when I pull the dust cap off.
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Thanks blknight, that's what I initially thought, but it is definately not blocked - i have cleaned and checked it many times. The pressurised air is trapped only in the hub. The pressure is released only when I pull the dust cap off.