For the past month or so, or maybe it's been since I replaced my plugs, wires and injector I've noticed a warm oil burning smell from the engine compartment of the 4Runner. My valve covers are tight and not leaking but I can see a little bit of oily furryness at the rear of the engine, kind of behind the valve covers. In some searching it seems as if I might have a leaking cam shaft plug. Nothing seems too wet and isn't dripping on the ground but I'd like to stop something before it gets worse.

Anyone have any experience with this or the repair?

I've done a little googling and it's mostly older write ups. Most of the jobs start as a valve cover gasket replacement and lead to the cam plugs. I figure if I tear into it I might as well replace the seals, plugs, spark plug tube seals, pcv & grommet. I've got part numbers and a general idea of the work but was looking for a few details. I haven't peeled into the FSM (nor do I have it on me) but it doesn't seem like a big job. If it is I'd like to pick your brain.

So far my parts list includes:

Spark plug tube gaskets
Valve cover gaskets
Valve cover washer seals
Intake plenum gaskets
PCV and Grommet
Cam plugs
FIPG