I have a 2001 Honda Prelude SH w/ 190k miles and a slow oil leak (~ 0.5-1 qt/week depending on how much I drive it) that I believe ultimately comes out the lower timing belt cover.
I also need a new timing belt. Now I was going to take it to a shop for the belt and the leak but I've decided to tackle the timing belt on my own. This means that I should also find the leak (if I don't, I might as well have the shop do the belt, too).
From the service diagrams and some reasoning it seems the leak is most likely from the cam or crank seals.
My question is: What techniques can I do to diagnose where the leak is coming from in an engine that has the timing belt removed and thus can't run? Is there anything I can do beyond just replacing the hypothetically bad seals, putting it all back together, then seeing if the leak stopped?
I don't want to have to take it all apart again if replacing the seals doesn't fix it, since this is already a pretty daunting task. My goal is to verify that the leak is fixed before reassembling it, and to not have this turn into a week long project.
What techniques are available to me? How can I definitively nail down the leak (or at least increase the chance that I've fixed it) while minimizing the possibility of having to repeat a bunch of disassembly work?