Nissan 240SX/Altima 1993-1998 Repair Guide

Distributor

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REMOVAL & INSTALLATION



See Figures 1 and 2



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Fig. Fig. 1: The distributor is removed by loosening the two attaching bolts and pulling the unit straight out of the cylinder head



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Fig. Fig. 2: When the dot on the distributor tang and the slit on the collar are aligned, the rotor is positioned at the No. 1 cylinder terminal inside the distributor

  1. Disconnect the negative battery cable.
  2.  
  3. Label and disconnect the distributor electrical harness.
  4.  

On some engines, it may be necessary to label and remove the distributor wires and cap to gain clearance to remove the distributor.

  1. Remove distributor cap and position it aside with the ignition wires still attached.
  2.  
  3. Matchmark the position of the rotor to the distributor housing and the distributor housing to the engine.
  4.  
  5. Remove the distributor hold-down bolt and clamp.
  6.  
  7. Remove the distributor from the engine.
  8.  

To install:

Before installation, inspect the distributor O-ring and drive gear for wear and/or damage. Rotate the distributor shaft to make sure it moves freely, without binding.

Engine Not Disturbed
  1. Install the distributor, aligning the distributor housing and rotor with the matchmarks made during removal.
  2.  
  3. Install the distributor hold-down bolt and clamp. Only snug the bolt at this time.
  4.  
  5. Connect the distributor electrical harness.
  6.  
  7. Install the distributor cap and wires.
  8.  

Make sure the ignition wires are securely connected to the distributor cap and spark plugs.

  1. Start the engine and adjust the ignition timing. Refer to General Information & Maintenance .
  2.  
  3. Tighten the distributor hold-down bolt securely.
  4.  
  5. Recheck the initial timing and re-adjust if necessary.
  6.  

Engine Disturbed

See Figure 3



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Fig. Fig. 3: After positioning the engine at TDC on the No. 1 cylinder, align the distributor gear to the marks on the distributor as illustrated. Then install the distributor

Use this procedure if the engine position is disturbed after the distributor is removed.

  1. Disconnect the ignition wire from the No. 1 cylinder spark plug and remove the spark plug.
  2.  
  3. Place a finger over the spark plug hole. Rotate the engine clockwise until compression is felt at the spark plug hole.
  4.  
  5. Install the No. 1 cylinder spark plug.
  6.  
  7. Align the timing pointer with the Top Dead Center (TDC) mark on the crankshaft damper.
  8.  
  9. Rotate the distributor shaft so that the marks on the drive gear end of the shaft and the mark on the housing align as illustrated.
  10.  

If the distributor does not have these marks, rotate the distributor shaft so that the rotor tip is pointing to the distributor cap's No. 1 spark plug tower position.

  1. Install the distributor, making sure it seats completely on the engine. If the distributor does not seat completely, remove it and use a long, straight blade screwdriver to adjust the position of the oil pump shaft slot to the relative position of the tang on the bottom of the distributor shaft.
  2.  
  3. Install the distributor hold-down bolt and clamp. Only snug the bolt at this time.
  4.  

Ensure that the ignition wires are securely connected to the distributor cap and spark plugs.

  1. Install the distributor cap and wires.
  2.  

Ensure that the rotor tip is pointing to the distributor cap's No. 1 spark plug tower position, prior to fastening the distributor cap in place.

  1. Start the engine and adjust the ignition timing. Refer to General Information & Maintenance .
  2.  
  3. Tighten the distributor hold-down bolt securely.
  4.  
  5. Recheck the initial timing and adjust if necessary.
  6.  

 
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