Kia Sedona: Variable Intake Solenoid (VIS) Valve Description and Operation| Description |

| Engine condition | VIS valve 1 | VIS valve 2 | Operation |
| Intake Manifold | Surge Tank | ||
| Low speed | Closed | Closed | Increasing engine performance in low engine speed by reducing intake interference among cylinders |
| Medium speed | Open or Closed | Open | Increasing intake efficiency |
| High speed | Open | Open | Minimizing intake resistance by shortening intake manifold length and increasing area of air entrance |

Variable Intake Solenoid (VIS) Valve Specifications
Variable Intake Solenoid (VIS) Valve Schematic DiagramsComponents and Components Location
Component Location
1. Hood switch2. Burglar horn3. BCM & RF receiver4. Key warning switch5. Front door lock actuator & switch6. Rear door lock actuator & switch7. Tail gate actuator & ...
Spark Plug Repair procedures
Inspection
[On vehicle inspection]
1.
Accelerate the engine to about 3,000 rpm 3 times or more.
2.
Remove the spark plug.
3.
Check the spark plug visually.
If the electrode is dry, the ...