4

My bike tires will not pump up at all. I tried forever. I had this bike for a year and then it won't pump at all. I have a pump you stand on and use your 2 hands to pump. At first it was pumping air a little but now I it's not pumping. What do I do I'm confused. Do I need a new inner tube or I do I have a bad a tire?

  • 1
    If you pump without having the pump attached to the wheel, does air come out of the pump head? – Batman Jan 4 '15 at 23:44
  • 2
    Does the pump quickly get harder to pump, or does it stay easy to pump? – freiheit Jan 5 '15 at 1:04
  • 1
    I'm voting to close this question as off-topic because OP has not provided enough information to know what the problem is. – Daniel R Hicks Jul 6 '15 at 2:41
  • 1
    I'm voting to leave open; the answers can help someone else with a similar problem. The OP hasn't been seen since the qn was posted. – andy256 Jul 6 '15 at 4:52
  • Perhaps a new tube will work? You said you've had the bike for a year....was it new to you or used? – Ben Jul 14 '16 at 14:59
12

What kind of valve do you have?

enter image description here

If you have Presta valves then you need to unscrew that little knobbie thing on top until the knobbie is all the way unscrewed against the bump on the end of the shaft it rides on.

With either Presta or Schrader you can have a problem with the pump if you do not press the pump chuck all the way onto the valve. Especially with Schrader there is a pin in the chuck that needs to depress a pin inside the valve to open it up. And sometimes you need to adjust the chuck by screwing the collar on the business end of the chuck on or off a turn or two, so that the chuck will go on and seat tightly.

(When you're finished inflating a Presta valve, don't forget to turn the knobbie the other way, so that it helps hold the valve closed. Don't wrench it tight, but just get it snug.)

  • last bracket is about presta rather than schrader. – W1ll1amvl Jan 5 '15 at 4:34
  • @W1ll1amvl - Oops! Will fix that! – Daniel R Hicks Jan 5 '15 at 4:37
2

Another possiblity is that the valve is clogged up from Slime (or other brand of puncture prevention fluid). Remove the valve core and inspect for debris clogging the valve opening.

  • 1
    Seems unlikely someone would have slime in their tires and not know it. – Batman Jan 7 '15 at 0:11
  • 1
    Possible if it's a "used" bike. – Daniel R Hicks Jan 7 '15 at 12:40
1

Think you need to unscrew the valve on the tyre sounds as though its not allowing air into the tyre

  • 1
    It would be good if you explained a bit more (and maybe put a diagram). This is for example relevant to Presta valves, not Schraeder valves. – Batman Jan 6 '15 at 3:52

protected by Batman Apr 28 '17 at 23:31

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.