Throttle Body: Inspection

INSPECT THROTTLE BODY ASSEMBLY
1. Inspect that the throttle valve shaft is not rickety.
2. Inspect that all ports are not clogged.
3. Inspect that the throttle valve opens and closes smoothly.
4. Inspect that there is no clearance between the throttle stop screw and throttle lever at throttle valve closed position.
  
  Fig 1: Inspecting Clearance Between Throttle Stop Screw
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NOTE: Do not touch the throttle stop screw.