False air leaks.
Cylinder balance.
Injector fault.
Timing chain stretched.
Low fuel pressure.
High fuel pressure.
Crank sensor.
Coil output low.
Carbon on back of intake valves.
Worn valve guides.
Bad valve seats.
Hmmmm.....
Drive line wear.
Drive line imbalance.
Trans' mount.
Engine mount.
'sit ..I think.
.