My van has over 80000 miles on it. I've never changed the plugs. The check engine light came on. It is running sluggish. (Chugging). I believe the plugs may be fouling but I can't locate them. Can anyone help me, please?
What specific tool do I need to remove the cover to expose the other 3 plugs?

Below the cover,under the ignition coils,3 in front,3 in the back.

the plugs are at the end of the plug wires.some cars have an ignition coil on each plug.

First, you should get the check engine light codes read first, then you can determine if that's what needs to be done.