Cam Chain Inspection
Special Tools Required

Pin driver, 5.0 mm
 07GAD-PG20100
  1. Remove the front wheels.
  1. Remove the four spark plugs.
  1. Rotate the crankshaft pulley two turns clockwise.
  1. Set the No. 1 piston at top dead center (TDC). The punch mark (A) on the variable valve timing control (VTC) actuator and the punch mark (B) on the exhaust camshaft sprocket should be at the top. Align the TDC marks (C) on the VTC actuator and the exhaust camshaft sprocket.
  1. Measure the clearance between the cam chain and the tensioner arm with the pin driver, 5.0 mm.
    • If the clearance is OK, go to Step 18 .
    • If the clearance is more than the service limit, go to Step 8 .
    Chain-to-Arm Clearance
    Service Limit:
    5.5 mm (0.22 in.)

  1. Support the engine with a jack and wood block under the engine block.
    NOTE: Do not hit the oil pump and the baffle plate when placing the jack on the edge of the engine block.
  1. Remove the cam chain, and check the teeth on the crankshaft sprocket, the VTC actuator, and the exhaust camshaft sprocket for wear and damage. If any of them are worn or damaged, replace if necessary.
  1. Check the oil passage on the auto-tensioner for clogs. If the auto-tensioner is clogged, replace it.
  1. Measure the oil pump chain auto-tensioner rod length.
    Oil Pump Chain Auto-Tensioner Rod Length
    Service Limit:
    13 mm (0.5 in.)

  1. If the length is over the service limit, replace the oil pump chain. When replacing, check the teeth on the crankshaft sprocket and oil pump sprocket for wear and damage. If any of them are worn or damaged, replace if necessary.
  1. Check the oil passage on the oil pump chain auto-tensioner for clogs. If the auto-tensioner is clogged, replace it.
  1. Remove the jack and a wood block.
  1. Install the four spark plugs.
  1. Install the front wheels.