Codes P0335, P2006 and P2009, engine Jerking and while you depress accelerator pedal?

This vehicle was repaired by another mechanic because the cylinder head gasket worn out. Then after this the vehicle could not raised while engage on gear. So, I did the crankshaft sensor installation procedure and P0335 was gone without returning. But this engine misfired without indicating a particular cylinder, so I removed spark plug and visually inspected them, Cylinder 1 and 2: black carbon deposit, Cylinder3: burns fine but cylinder 4 soaks oil/ gasoline. I got another used plug and replaced it, it idles fine but jerk on engine load like when you engage gear, so I noticed that the spark plug is almost out. So how do I test to see whether the turbo is good as the engine discharge smoke from tail pipe or is it misfire causing the smoke?
I also need the location of the intake manifold runner.