[Shotimes] Engine Knock

[Leigh Smith]

I have narrowed the knock-knock noise down to the upper end of the 
engine. Not the crank bolt, not the oil pan area, not the clutch area.

Seems to be in the valve cover directly behind thew coil pack (tensioner 
chains) .
Can also hear it at the spark plug area for that cylinder (#6?). Intake 
cam side.

Joseph & Don, if you have both had tensioner cam issues, is that what 
this sounds like? It is audible at idle,  but only under the hood with 
the hood up. Sounds like a faint (rod) knock-knock. Hear a similar noise 
under load while driving at 2400 prm (+/- 300).

I was thinking of pulling #6 spark plug wire to see if it changes when 
that cylinder is "off" to further rule out a rod or pin or piston issue.

Any other ideas / comments?

Did changing the chain tensioner help?

Lee