Crosman 2240 issue

[--ped--]

needs a new cos valve seal if it all leaks out as soon as pierced
if it comes out of barrel or breech with the probe to the rear it needs new stem

[Gerard]

Did you put a drop of Pellgun Oil or similar oil on the tip of the CO2 bulb before putting it in? This has always been basic practice with the 2240 and similar CO2 guns, helping to make a good seal and maintain the softness of that seal rubber.

[Alakar]

Yep all the CO2 capsules are lubed .
However , I bought the pistol 2nd hand so whether or not the previous owner did the same , I can't be sure of .

[Djdsher]

Did it just happen the once or every time now? Maybe you just didn’t tighten the capsule in enough?