I only owned my S3 2.25P (3B) for about 18 months, but eversince it has had a distinctive knock on startup, disappearing almost instantly when oil pressure builds. Maybe 2-3 seconds after starting.
The engine runs fine, very smooth in fact, smooth and no knocking, but I was just wondering if this was a common issue with a quick fix. I checked the valve clearances and made small minor adjustments with no real effect, obviously changed oil and other regular maintenance. Oil pressure looks good.
Is this just general bearing wear and should I just expect to change bearing shells at some point. Can this be done in situ or just drop in an overhauled short block at a some point?
Looks like the PO changed the head (black) with temp sticker etc. no rust, Looks fairly new.