CVVT Assembly Inspection

Refer to CVVT & CAMSHAFT and remove CVVT Assembly.
Check that the CVVT is locked by turning it clockwise or counterclockwise. It must not rotate.
Intake CVVT: Seal one of the two advance holes in the camshaft journal with tape.
Exhaust CVVT: Seal one of the two retard holes in the camshaft journal with tape.
Intake CVVT: Apply approx. 150 kPa (1.5 kgf/cm² , 21 psi) of compressed air into the unsealed advance hole to release the lock.
Exhaust CVVT: Apply approx. 150 kPa (1.5 kgf/cm² , 21 psi) of compressed air into the unsealed retard hole to release the lock.
Intake CVVT: With compressed air applied, rotate the CVVT into the advance direction (counterclockwise) within its phasing range and check that the CVVT turns smoothly.
Exhaust CVVT: With compressed air applied, rotate the CVVT into the retard direction (clockwise) and check that the CVVT turns smoothly.
Intake CVVT: Rotate the CVVT into the most retarded position (clockwise) and then check that the CVVT is locked.
Exhaust CVVT: Rotate the CVVT into the most advanced position (counterclockwise) and then check that the CVVT is locked.

Specification:

Intake: 30°±0°30" (from the most retarded position to the most advanced position)

Exhaust: 30°±0°30" (from the most advanced position to the most retarded position)
Is parameter displayed within specification?

Courtesy of KIA MOTORS AMERICA, INC.

YES

Check the camshaft sprocket and crankshaft sprocket for abnormal wear, cracks, or damage and replace as necessary.
Inspect the tensioner arm and chain guide for abnormal wear, cracks, or damage and replace as necessary.
Check the tensioner piston moves smoothly when the ratchet pawl is released with thin rod.
Perform applicable troubleshooting guide as necessary, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Carefully re-do this troubleshooting guide steps.
If problem still occurs, replace CVVT Assembly and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.