i have a 95 civic, its making a strange clicking noise right before i shift, only at high rpms, it doesn't do it if im in neutral and hit the gas, only when im driving. i cant figure it out and neither can my friends, if you have any ideas please share, thanks!!

 

Can you tell where the noise is coming from?..inside? outside? Which side? As much detail as you can put please.

 

its from the middle under the engine, but it stopped after i put some oil cleaner stuff in it