Need help identifying oil leak on top of engine

[jscutt]

Hey yall

I have this light oil leak next to the intake and plugs and I'm not sure where to begin. Does it look familiar to anyone? It kinda looks like it's coming from that valve. I'd like to fix and clean it up.

It's a 1999 XLS, 4.0L OHV

Zoomed out a little more:

Thanks all for your help! Love this forum!

 

[lobo411]

I'm guessing just blow by. Service your PCV system and replace the O-ring gaskets on the upper manifold. 30 min job.