Hi all, just an update on my smoking problem, LOL, I have started to replace the valve cover gaskets and tube seals as the car has oil leaks, I pulled the plugs out of the front bank and they all were pretty clean (no carbon build up) but when I pulled all 3 out of the rear bank they were a bit carboned up, not serious but not as clean as front bank plugs, anyone know what can cause this? maybe this is the cause of the smoke. I noticed the hose that connects the valve covers had oil in it. The valve covers will be getting a thorough clean and the hoses will be replaced, so maybe this may help the smoking problems, I soon will find out. Cheers