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Question:

How to fix a pinhole leak in copper pipe?

Its not the actual pipe but its this copper disk part connected in the top of the pipe.ive tried patching it up with tape but it keeps on leaking. And also the leak isnt a leak its more like a spray of water not stoppingplease help

Answer:

The traditional and quickest way to fix it permanently would be to turn the water off and solder the hole. There are also epoxy products available today which may also work, however they take a long time to cure.
It doesn't sound like you have plumbing experience. What you describes sounds like an end cap with a bad solder joint. Call in a plumber to resolder the cap. It will cost you more in money but it will save you a lot in frustration and possible water damage. Don't try to repair this yourself. Whatever fix you use will blow sooner or later.
If its copper tubing cut the tubing in to where the hole is and put a ring joint coupling where the hole is.If its copper pipe and you can get to it use a torch and silver solder to close the hole.Kinda hard to suggest more than this not knowing

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