MCX block drain and knock sensors

[jwroblew]

I want to add ball valves on the block drain plugs were the knock sensors go. If I put a tee there, with the knock sensor on one end and the ball valve on the other, will the sensor still work properly?

[Bubski]

The sensors need to stay oriented to the block like they were before the tees were added. I put tees on my Nautique and added sensors horizontal to the block and I would get a check engine light but as long as they were perpendicular no check engine. It took a while to discover what was happening because the check engine would come and go.