If it is old and rusted- it is best to get new ones.
Maybe it is loose somewhere, so maybe you need to tighten it.
I recommend that you call a plumber.
how do i fix a leaky sink
The mens room at our office building has a leaky faucet. Where can we information online on how to fix a leaky faucet?
Replace it
You can fix a leaky faucet.
Leaky roof, leaky pipes, building built on a poorly drained site with a high water table. Insufficient ventilation.
duct tape it... yay!
Yes, it means you need a plumber!!!
You dismantle it and replace the seal.
you replace it
replace the seals
Brake it down
Replace window seals or if they are repairable you can fix them with silcone, it comes in black to match.