I have been lurking, reading and learning a lot on here for a while now, and finally signed up a few months ago. I have found this forum to be a great resource. Unfortunately, my first post is to report an engine failure. I recently purchased my 3rd, and what I hope to be my last, suburban. It's a 1999 7.4 K2500. I have spent the last few months going through it and fixing everything necessary to get it back into road worthy condition. I recently had a tune done. While creating the follow up test log something happened and now the engine knocks and has no oil pressure at idle. I am curious to see if anyone could view this log if I shared it and see if there was anything in it that may give an indication of what went wrong? Thanks in advance.