I did some searching and couldn't seem to find anything equivalent to my scenario.
I have a 1996 3.4l 4x4 with 130,000k. Recently, I've been getting an engine knock at idle when it reaches full operating temperature.
I seafoamed the vehicle through the vacuum line and gas tank a few weeks ago. Smoothed out my idle and acceleration, but didn't do anything for the knock.
I'm thinking this could be an oil viscosity issue? Has anyone switched oil weights, or has anyone had a similar scenario/solution?