So I am having this issue with my 1996 Honda Civic 1.4i...

[Mr.Boombastiic]

There is this sound behind engine like knocking. It can usually be heard when engine is warmed up and idles. When I rev it up that sound completely dissapears. Does anyone know if this is some bad thing or I shoul

d just let it be.

 

[gtman]

6th gen Civic, right? To be honest, you'd get a better response at a site for your older Civic model.