I have a 2009 Dodge Charger pursuit, 5.7 hemi, it has a rough idle and excessive white smoke from exhaust, I checked a plug and the node was bent and black so I changed them all , that solved my random/multi cylinder misfire so it’s not missing anymore but it’s definitely idling rough , no current codes but 1 pending , system to lean bank 2, then there’s a engine knock but its hit and miss sometimes it does it sometimes it doesn’t but I don’t I hear it briefly every time I start it up but it doesn’t always stay sounds like it’s coming from top front of engine
Check for bad hydraulic lifters and a ground down cam. These engines are famous for it.
I’m thinking it is a bad lifter because upon replacing the head the , push rods on the exhaust side falls straight through (all the way down in the hole )
Bummer.
Are you losing coolant? Id do a head gasket check. Typically white smoke is coolant burning, it could be a bad intake manifold gasket or head gasket.
