Re: Smoking 4.6
Are you losing & adding coolant to the reservoir? Do you put the pedal to the floor regularly? Or is this a 'new' thing? If it's a new thing, I'd say it's normal as the engine probably hasn't been that high in the rev range. If you keep it up, it should subside.
If fluid levels are holding fine, then I suggest running a good product, such as SeaFoam through a vacuum line (brake booster works best) to help get rid of any built up carbon on the valves. Fuel injector and carb cleaners if you add them to the fuel tank, probably won't help if the build up is rather thick. Running seafoam, and then starting the vehicle after 15minutes will produce LOTS of white smoke from the exhaust. It's normal and will eventually subside. With any luck, after 100miles of driving the engine should no longer 'smoke' when you put the pedal down.
WORST case is a bad head gasket, or a leak into the intake. Still, if the coolant level is holding steady, I wouldn't worry too much.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!