Thread: Tire pressure?
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Old 07-04-07, 11:16 AM
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alumrock12
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Originally Posted by Hal Fisher
How do you get an accurate reading with presta valves? I mean the guage on my pump just flys up and down when I'm adding so I have no idea what pressure I'm at.
first make sure you have an attachment that goes from shrader to presta. i first screw on the attachment to the presta, then screw on the pump to the attachment. make sure they're screwed on securely. if your gauge is going up and down alot, like 25 psi at a time, it probably means that... you didn't unscrew the presta lock nut all the way... or your attachment is lose, or wasn't screwed on properly. at least that was what the problem was when my gauge ever went up and down.
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