If possible, borrow/rent a borescope to look for any signs of damaged valves, piston heads and possible scoring on the cylinder walls.It’s not throwing a single code at all which is frustrating. All the pulleys and accessories appear to free spin just fine. I dropped the lower oil pan and there is fine metal pieces in there, but small and not a ton of them. Not sure what from. Very flat pieces.
Those are very low compression numbers. Not that I know what they are for this engine, but I don't know of any current engine that is below 150.Did the compression test, cold obviously. The left bank is all around 120. The right bank is 90,90,120,90. Looked at the oil again and still don’t see anything obvious. There’s no metal hitting metal noise on crank, only when running, but it sounds off somehow I can’t articulate when it cranks. I pulled the right bank timing cover and the chain is there and taut. The spark plugs appear old and like it was running rich. Gonna borescope the right bank I think to see if there’s obvious valve damage to a piston. View attachment 49419 View attachment 49420