Altima 2007-2009

Inspection

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The ignition timing is controlled by the ECM. No adjustment is necessary or possible.

2.5L & 3.5L Engines





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Fig. On 3.5L engine, a timing light pickup can be connected to the No.1 ignition coil on the rear cylinder bank below the intake manifold-3.5L engine

  1. Slide the wiring harness protector of ignition coil No.1 back (2) to reach the wires.
  2.  
  3. Attach timing light to the ignition coil No.1 wires as shown in the figure.
  4.  
  5. On 3.5L engine, ignition timing should be 18º ± 5° BTDC at idle. There is no adjustment.
  6.  
  7. On 2.5L engine, ignition timing should be 15º ± 5° BTDC at idle. There is no adjustment.
  8.  

 
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