Hey Steamer,
I listened to the video again and I'm pretty certain the knock and engine RPM are in sync. I assume then that it is more likely a rod knock or piston slap issue rather than something in the cam & valve train. I had trouble getting the video attached to the post. When I click on...
I have a 1974 FJ40 with a 1978 F2 engine. I have had the vehicle for about a year and don't know anything about it's history. The engine recently started making a knocking (loud tapping?) noise from what seems like the top front of the engine. The noise is not present at idle speed. Have...