Rep Power: 0

Why is this thing there? I've replaced it with a new one and its still leaking. Is there a better Cam plug, something that can be tightened? 2004 EX 5 speed stick

 
Rep Power: 133

It is for a distributor but is not needed anymore. Use an OEM plug.

 
Rep Power: 118

Back in the 80’s they did take advantage of the hole for a distributor, but I suspect that was simply smart engineering for a hole that “had” to exist to bore out the camshaft journals precisely.

While the need for distributors disappeared, the need for a precise camshaft fitment remained so we still have the hole.

 
Rep Power: 228

If OEM cap leaks then

-Remove the valve cover
-use degreaser to clean all areas needed to seal
-place a bead of liquid gasket around the head
-place the cam cap on the liquid gasket
-place a bead of liquid gasket over the top of the cap
-reinstall valve cover
-snug bolts up lightly

-Let sit overnight

-torque to spec.

Make sure not to use liquid gasket on the cam seal!