05 2 wheel drive f150xl 4.2 l 135,000 miles. Smoking white out of exhaust. More at start up but doesn't go away. Turns a little blue. When parked at idle if I bring up the RPM's quick I will get a little puff of black in the white smoke. I can't smell or taste(when I touch my fingers to mouth) any anti freeze in the exhaust smoke but I live in Myrtle Beach and I have little if any anti freeze in the coolant. I flushed the motor, changed oil and filter and added a can of seafoam. I took the throttle body off and cleaned it. I also replaced the air filter because I went down a dirt road and hit a deep water hole. Dirt and mud got into the air filter and by passed it also. This was the reason for the engine flush also. I can't recall any smoke before this. Maybe a puff on start up from moisture not sure. Im going to buy a coil pack and plugs and start from there. I have never had this many codes. Any help or guidance is appreciated.

P0174 Bank system 2 to lean

P0300 random multiple
Lean mil. Missfire detected

P0305 random multiple Missfire detected cylinder 5 misfire

P0306 cylinder 6 Missfire

P0316 Missfire detected on start up first 1000 revolution

 

I put a new coil pack on and.it did nothing to change the skipping and bucking. My friend said I can return it. I have new plugs but I don't think that's going to fix the problem. Could a catalytic converter be causing this? Catalytic converter would have nothing to do with these codes I wouldn't think. I might have to break down and bring it to a garage but then I will feel defeated and the wife will win.

 

Crank position sensor.

Plugs.

Wires.

 

Coil pack did nothing. The plugs did it. Wow. It was # 5 and 6. I test drove it before I changed them two. No change. Changed them now runs perfect. Now to find out why she's smoking. I assume head or intake gasket. How can I find out for sure without tearing it apart?