Hi, my first post!
I think the problem is the exhaust gas return thats coking the back section of the manifold although some say its the maf playing up, if that was the case all pistons etc would be coked? The egr returns in those rear # 3 & 4 pistons.
My thoughts anyway.
So you bought the truck new and fitted nads inside of 10k?
If thats the case mines got no hope with nads being fit at 80k, and its now got 176k on it, so its always in the back of my mind, is it going to blow!!??
I've been checking out the new 3.2 td ranger 6 speed auto, as much as I'd love a new patrol the 4 speed auto and crumby 3.0 whilst towing just doesnt cut it!
If they bought out a dual cab auto patrol with a decent tray and tdi to match id be in!
Anyway, good luck with it!
Edit.
Looking at the date you should have it back on the road? So how is it?
I often wondered at buying a shot engine and having it recoed with port/polished head, balanced etc, i wonder if that would ad more power.
Cheers