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Stirrup pump problem
3 months ago, I bought a secondhand Gunpower pump.
I use it daily with no problems.
But over the last 4 days I have had increasing problem.
On the upstroke, about a third of the time, no air goes into the cylinder, resulting in the handle going down again under vacuum, with no resistance.
On the downstroke, a third of the time, there seems to be double resistance and the pressure goes up by about 4 bar on a single stroke.
This destroys my rhythmn and makes it hard work.
Any suggestions? Apart from get a dive bottle.
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