I have an 07 Accord EX Sedan K24A8 MT 220K Miles. I replaced the Valve cover gasket about 2K Miles ago. The car had no oil leaks until I changed the Valve cover gasket. The only thing I didn't do properly was torque it down to spec. I tightened the bolts down by hand in no certain order. Would that be the issue or is the new valve cover gasket a faulty one? I got the valve cover gasket from O'rielly's with the spark plug gaskets. Also, the reason I changed it was because I took off the valve cover for repaint.
Also, It is leaking from the back, because when looking at it, you can see oil on top of the headers.