Bicycle Blow Off Valve. Alternatively the valve on the tube could be bent which could lead to pressure leakage and thus blow off. For such a small component the bike tire valve plays a significant role in ensuring the overall success of a ride.
Some bike pump with use will start to leak where the tire valve enters the pump head. Lift out the core removal tool and remove the core. Certain chucks are designed to be placed on the valve only when it s at the bottom of the wheel and alternate angles will cause pressure to pop the chuck off the wheel.
How to fix and repair a leaking bicycle pump quickly and easily.
Lift out the core removal tool and remove the core. This is probably due to improper placement of the chuck. This type of valve is typically an aftermarket modification. Certain chucks are designed to be placed on the valve only when it s at the bottom of the wheel and alternate angles will cause pressure to pop the chuck off the wheel.