I keep pumping tyres but air still comes out?

Question

Only like half of the air comes out

im not sure what to do its driving me insane

Answer 1

you could have a slow punctour or u could need a  ne valve

Answer 2

punture some where

Answer 3

What AWOL said. I use Scabs, glueless patches. Peel 'em off the backing, place over puncture, and *poof* no more leak.

Answer 4

It will only take half the time to blow up

Answer 5

there's a hole or a thing on the tyres...duh..lol

well maybe buy new tyres..

=]

Answer 6

get a new innner tube

Answer 7

You obviously have a puncture somewhere.  Remove the inner tube, and put it in a basin of water, then squeeze - the bubbles will indicate where the puncture is.  You will then be able to fix it using a puncture repair kit, available from sports shops etc.

Answer 8

The valve you connect the pump to is faulty. It is not closing when the air is put in, is the right pressure.

Answer 9

if only half the air comes out it will only be flat at the bottom

Answer 10

You may or may not have a puncture but you also may have faulty valves on the tube.  How old are the tubes?  Sometimes they could be too old or if they are new, they just may be faulty.

Replace the tubes - both of them.

Answer 11

if you can feel the air push back into the pump then it is a leaky valve.  That is the easiest thing to replace anyway, you just unscrew it and put in a new one.  try that before taking the tyre off.