FAO mechanics and car buffs

[Dr Diamond 407]

-put air in my tyre, moved my car off the air pump and onto the main forecourt to fill my car with gas/petrol

-the tyre started gushing air and went flat


-moved off the forecourt and changed to the spare

-pumped up the spare


-checked the "flat", pumped it up. its currently held at the correct PSI for 30 mins.....ermmmm what ?


reckon its safe to put the "flat" back on ?

[Diddums 4,346]

Worth a shot, although you'll find that leaks tend to be more obvious with two tonnes of car on them.

[Dr Diamond 407]

yeah someone told me that as well. i figure it could be a dodgy valve and with a car ontop it will go again, so getting it changed tomorrow hopefully

[Madjonny 386]

Try it, perhaps the valve was just stuck open at first...

[Drifter 851]

Could be a bead leak as well, that's another leak that will sometimes only show up when the weight of the car is on it. If you have a container big enough fill it with water and hold the tire under for a minute, even the slowest of leaks will show up with pushing air bubbles from the leak so you can locate it.