CVVT Assembly

Inspect CVVT assembly.
1. Check that the CVVT assembly will not turn.
2. Apply vinyl tape to the retard hole except the one indicated by the arrow in Fig 1.
  Verify the hold to tape and the hole to put air in.
  
  Fig 1: Identifying Retard Hole
  Courtesy of KIA MOTORS AMERICA, INC.
3. Wind tape around the tip of the air gun and apply air of approx. 150kpa (1.5kgf/cm² , 21psi) to the port of the camshaft. (Perform this in order to release the lock pin.)
  NOTE: When the oil splashes, wipe it off with a shop rag and the likes.
4. With air applied, as in step (3), turn the CVVT assembly to the advance angle side ( as shown in Fig 2) with your hand.
  Depending on the air pressure, the CVVT assembly will turn to the advance side without applying force by hand. Also, under the condition that the pressure can be hardly applied because of the air leakage from the port, there may be the case that the lock pin could be hardly released.
  
  Fig 2: Identifying CVVT Advance & Retard Rotation Directions
  Courtesy of KIA MOTORS AMERICA, INC.
5. Turn the CVVT assembly back and forth and check the movable range and that there is no disturbance.
  Standard:
  
  Should move smoothly in a range from about
  
  22.5° (Intake) / 20.0° (Exhaust)
6. Turn the CVVT assembly with your hand and lock it at the maximum delay angle position (counter clockwise).