VVT Solenoid, Inspection And Cleaning: Inspection: Cleaning

Fig 1: Inspecting VVT Solenoid While Is Connected

Courtesy of VOLVO CARS OF NORTH AMERICA.

Connect power to solenoid. Solenoid should click.

Blow through center hole with compressed air.

Air should emerge from outer hole (2).

If plunger is sticking or solenoid fails to operate electrically, the direction of flow will be unchanged from step 1.