air con leak?

Hey i'm hoping you can help me.

I have a toyota lucida estima 2.2 diesel and there is a pinhole leak in the aluminum gas pip to front air condition unit.

How can i repair the pipe without replacing the complete length?

If you know where the leak is, you can try buffing the area with emery cloth to shine it, and then taking a small thin piece of sheet polyethylene or polypropylene and clamping it over the hole with a screw hose clamp.

Hi

Bit of a long shot maybe but could you try Bond-It Silicone Repair & Rescue Tape?