cam chain tensioner

[DeanR]

Just measured depth inside the tensioner hole after removing the plug - 12mm - does this sound ok? A past thread said 20mm means no more adjustment available and 14.6mm would be for a properly adjusted new chain. There was some oil behind the plug. Would this indicate needing to check any further for a leak?
Also, does it matter if you do the adjustment before or after checking the valves? Thanks everyone.

[randy]

Dean, did you measure after you adjusted the chain?

[DeanR]

Hi Randy.
Haven't done anything yet except to pull out the plug to measure
that depth.

[randy]

Okay, so first adjust the chain. Then take a look at the depth. I'll bet you get a big movement

[DeanR]

Lined up the timing plate mark, loosened the bolt, retightened and it now measures 17mm, even though I didn't hear anything move or shift.

[DeanR]

Neglected to mention that the timing plate had to be rotated (clockwise) almost the whole way around, maybe aound 320 degrees. Any significance to that?

[randy]

No.