how to fix a leaking joint of copper pipe ?

the olive can be removed,if you know how but these guys dont call a plumber out,its just a few min job,

mm
January 2013

You wont get the olive off as you may have found.

Go to plumbing shop ask for fernox jointing seal its in a tube in a yellow box or get something similar. Turn off the water undo the joint collar pull it back wipe the joint dry then squeeze about quarter inch of sealant on finger and wipe around olive against the joint, pull pipe back slightly if it will move, then some around the back end that the collar fits against then re-tighten. same on other joint.

bob
January 2013

If it's a compression fitting and tightening hasn't work you will need to turn water off and then undo the joint.check pipe and fitting then fit a new olive and tighten it back up

A1
January 2013