Hello,

I am a completely newbie in plumbing.

My girlfriend let the cap of the toothbrush fall down in the sink and the sink was stuck.

Today I tried to uninstall the p-trap but it was clean. I thought that the cap could have been in the horizontal pipe which goes to the wall (metal one) and I tried to turn it in order to uninstall it. It went away very easy. The cap was just at the end of this pipe.

I cleaned the pipe and I tried to install everything how it was at the beginning. Now the problem!

If I turn the water on (please forgive my english, I am not english mother tongue) the water spills from the wall, just where the horizontal pipe enters.

The horizontal pipe did not need any turn to be mounted, I just had to put in in the hole in the wall and this seemed to me very strange.

What do you suggest me?? Some sylicon? How to properly fix the wall pipe??

Help!

Thanks!

Is that horizontal pipe that went into the wall a heavy metal pipe?

Yes, it is metal, all the pipes are metal, including the horizontal one going to the wall.

Now I have isolated it with some duck tape but I am sure this is not a definitive work.

Yes, it is metal, all the pipes are metal, including the horizontal one going to the wall.

Now I have isolated it with some duck tape but I am sure this is not a definitive work.
Your English is just fine botolo,
Does the fitting going from the trap into the wall look like this?(see image).
Regards, Tom

Can you show us a picture?