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Valve Clearance: Inspection

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Perform the following inspection after removal, installation or replacement of camshaft or valve-related parts, or if there are unusual engine conditions due to changes in valve clearance over time (starting, idling, and/or noise).
  1. Warm up the engine. Then stop the engine.
  2. Remove the air cleaner and resonator assembly. Refer to "REMOVAL AND INSTALLATION ".
  3. Remove the (RH) bank and (LH) bank rocker covers using power tool. Refer to "REMOVAL AND INSTALLATION ".
  4. Turn the crankshaft pulley in the normal direction (clockwise when viewed from engine front) to align TDC identification notch (without paint mark) with timing indicator.
    Fig 1: Aligning TDC Identification Notch With Timing Indicator On Front Cover
    G04899696Courtesy of NISSAN NORTH AMERICA, INC.
  5. At this time, make sure both the intake and exhaust cam noses of No. 1 cylinder (top front on LH bank) face outside.
    • If they do not face outside, turn crankshaft pulley once more.
      Fig 2: Identifying Intake And Exhaust Cam Lobes Position
      G04899697Courtesy of NISSAN NORTH AMERICA, INC.
  6. Measure valve clearances at the locations marked "x" as shown in the table below (locations indicated with black arrow).
    Fig 3: Locating Valve Clearance Measurement Areas
    G08695708Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: Firing order 1-8-7-3-6-5-4-2
    • No. 1 cylinder compression TDC
    Measuring position (RH bank) No. 2 cyl (E) No. 4 cyl (F) No. 6 cyl (G) No. 8 cyl (H)
    No. 1 cylinder at TDC EXH       x
    INT x x    
    Measuring position (LH bank) No. 1 cyl (J) No. 3 cyl (K) No. 5 cyl (L) No. 7 cyl (M)
    No. 1 cylinder at TDC INT x   x  
    EXH x     x
    • Measure valve clearance using suitable tool. Refer to "STANDARD AND LIMIT ".
      CAUTION: If the inspection was carried out with a cold engine, make sure the values with a fully warmed up engine are still within specifications.
      Fig 4: Measuring Valve Clearance Using Tool
      G04899755Courtesy of NISSAN NORTH AMERICA, INC.
  7. Turn the crankshaft pulley clockwise 270° from the position of No. 1 cylinder compression TDC to obtain No. 3 cylinder compression TDC.
  8. Measure valve clearances at the locations marked "x" as shown in the table below (locations indicated with white arrow).
    Fig 5: Locating Valve Clearance Measurement Areas
    G08695710Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: Firing order 1-8-7-3-6-5-4-2
    • No. 3 cylinder compression TDC
    Measuring position (RH bank) No. 2 cyl (E) No. 4 cyl (F) No. 6 cyl (G) No. 8 cyl (H)
    No. 3 cylinder at TDC EXH   x    
    INT       x
    Measuring position (LH bank) No. 1 cyl (J) No. 3 cyl (K) No. 5 cyl (L) No. 7 cyl (M)
    No. 3 cylinder at TDC INT   x   x
    EXH   x x  
    • Measure valve clearance using suitable tool. Refer to "STANDARD AND LIMIT ".
      CAUTION: If the inspection was carried out with a cold engine, make sure the values with a fully warmed up engine are still within specifications.
      Fig 6: Measuring Valve Clearance Using Tool
      G04899755Courtesy of NISSAN NORTH AMERICA, INC.
  9. Turn the crankshaft pulley clockwise 90° from the position of No. 3 cylinder compression TDC (clockwise by 360° from the position of No. 1 cylinder compression TDC) to measure the intake and exhaust valve clearances of No. 6 cylinder (G) and the exhaust valve clearance of No. 2 cylinder (E).
    Fig 7: Locating Valve Clearance Measurement Areas
    G08695712Courtesy of NISSAN NORTH AMERICA, INC.
  10. If out of specifications, adjust as necessary.
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