First thing would be to check the firing order. It is 1-4-2-5-3-6. Cyl. are numbered front to rear right side or passenger side 1-2-3 Drivers side 4-5-6. On your coil pack should have cyl. numbers on it. If not right or passenger side 1-2-3 from front to rear. Left side of coil pack 5-6-4 front to rear. It is also possiable that the plug wires,coil,or spark plugs could be bad. See if this helps. If you need more help just let me know