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Valve Clearance: Checking

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Check valve clearance while engine is cold and not running.

NOTE:

Perform valve clearance inspection after removal, installation or replacement of camshaft or valve parts, or as necessary.

  1. Remove the air duct with air cleaner case, collectors, hoses, wires, harnesses, and connectors. Refer to REMOVAL AND INSTALLATION .
  2. Remove the intake manifold collector. Refer to REMOVAL AND INSTALLATION .
  3. Remove the ignition coils and spark plugs. Refer to EXPLODED VIEW .
  4. Remove the rocker covers. Refer to EXPLODED VIEW .
  5. Set No. 1 cylinder at TDC on its compression stroke.
    G04073027Courtesy of NISSAN NORTH AMERICA, INC.
    1. Align pointer with TDC mark (A) on crankshaft pulley.
      G08768737Courtesy of NISSAN NORTH AMERICA, INC.
    2. Check that the valve lifters on No. 1 cylinder are loose and valve lifters on No. 4 are tight. If not, turn the crankshaft one full revolution (360°) and align as shown in illustration.
      G04072918Courtesy of NISSAN NORTH AMERICA, INC.
  6. Check only the valves as shown in illustration.
    G04159788Courtesy of NISSAN NORTH AMERICA, INC.
    Crank Position Valve No. 1 Valve No. 2 Valve No. 3 Valve No. 6
    No. 1 TDC Intake Exhaust Exhaust Intake
    1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
      G04073030Courtesy of NISSAN NORTH AMERICA, INC.
      Valve clearance : Refer to GENERAL SPECIFICATION .
    2. Record any valve clearance measurements which are out of specification. They will be used later to determine the required replacement lifter size.
      G04132280Courtesy of NISSAN NORTH AMERICA, INC.
  7. Turn crankshaft 240°.
  8. Set No. 3 cylinder at TDC on its compression stroke.
  9. Check only those valves as shown in illustration.
    G04159791Courtesy of NISSAN NORTH AMERICA, INC.
    Crank Position Valve No. 2 Valve No. 3 Valve No. 4 Valve No. 5
    No. 3 TDC Intake Intake Exhaust Exhaust
  10. Turn the crankshaft 240° and align as above.
  11. Set No. 5 cylinder at TDC on its compression stroke.
  12. Check only those valves as shown in illustration.
    G04159792Courtesy of NISSAN NORTH AMERICA, INC.
    Crank Position Valve No. 1 Valve No. 4 Valve No. 5 Valve No. 6
    No. 5 TDC Exhaust Intake Intake Exhaust
  13. Perform adjustment if the measured values are out of the specification range.
  14. Installation of components is in the reverse order of removal.
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