I just replaced the connecting rod bearings yesterday, they had wear and the knock sounded low in the engine. Started it up last night and it was still there. The engine runs rough and almost dies at idle. I ran synthetic oil in it about a month and a half ago, then it was low really quick, so I did a change back to standard oil. I have 180k on the engine, plus no money. Is it worth taking apart and repairing the pistons/rings? I just had a jy AT put on last fall when the other tranny died. As long as there isn't anything too elaborate to do I can fix it, preferably without puling the engine. Just need to know thoughts from anyone who has had a similar issue before putting too much into it.