200 Accord knock sensor location.
 

I'm trying to locate the knock sensor on a 2000 accord with the F23A4
engine. The service manual shows a poor picture where it appears to be
just below the valve cover in the middle of the block. I know it
should be a small threaded piece with an electrical connection to it.
Anyone know where it is located ? I just started experiencing pinging
under light to moderate load. I've tried different brands of gasoline.
The ignition timing in this car is controlled by the ECM and
supposedly not adjustable. Any ideas ?