Originally Posted by ebinkerd
Pull the plugs one at a time and see if it affects the sound. If it can be isolated to one cylinder, the it is likely a rod bearing issue. To me it sounds like valve train related. Like someone posted before, try replacing the tensioner.
Pull the plugs one at a time and see if it affects the sound. If it can be isolated to one cylinder, the it is likely a rod bearing issue. To me it sounds like valve train related. Like someone posted before, try replacing the tensioner.
Thanks for the tip, this proved what we thought. Definitely the first cylinder, spun bearing. I guess we'll run on 3 cylinders.