EZ, KD.

Right, sorry about that:

1993 Montero 4x4
3.0 V6 Auto

I don't think its the common rear cam seal issue, they do leak a bit, but what does drip gets burned off on the heat shield of the manifold causing a bit of smoke from time to time. I can literally see the drop(s) emerging from the area I described earlier. I'll try my best to get someone to lend me a camera to get the footage of it before and at start up to see whats what.

I'm pretty sure I read or heard in passing that all pre 94 v6 were 12 valve, that is why I asked to confirm.

I'll search for that diy harmonic wrench, lets just hope I won't need it anytime soon, thanks.