Where are the plugs? I looked in ALL DATA and it said they should be in front under the plastic shield.
I don't see them...please help

 

just so you know, your civic si is considered a EP3. good luck.

 

They are under the "spark plug cover" on the valve cover. Take the cover off, remove the coils and there you go. If you are replacing them, make sure you are using an oem plug or better. The plugs that are in there do not need to be changed until 100k.

 

if you want to then go for denso's