GM Metro/Sprint 1985-1993 Repair Guide

Distributor

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REMOVAL and INSTALLATION

See Figures 1 and 2

  1. Disconnect the negative battery cable.
  2.  
  3. Disconnect the wiring harness at the distributor and the vacuum line at the distributor vacuum advance unit.
  4.  
  5. Remove the distributor cap.
  6.  

Mark the distributor body in reference to where the rotor is pointing. Mark the distributor hold-down bracket and cylinder head for a reinstallation location point.

  1. Remove the hold-down bolt and the distributor from the cylinder head. Do not rotate the engine after the distributor has been removed.
  2.  

To install:


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Fig. Fig. 1: Aligning distributor marks



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Fig. Fig. 2: Aligning distributor shaft with the camshaft slot

  1. If the engine was not rotated proceed as follows:
    1. Align the reference marks on the distributor housing to the distributor hold-down bracket.
    2.  
    3. Install the distributor into the offset slot in the camshaft, then the hold-down bolt.
    4.  
    5. Connect vacuum hoses and electrical connectors to the distributor.
    6.  
    7. Install the distributor cap, then connect the battery negative cable. Check and/or adjust the ignition timing.
    8.  

  2.  
  3. If the engine was rotated while the distributor was removed, place the engine on TDC of the compression stroke to obtain the proper ignition timing.
    1. Remove the No. 1 spark plug.
    2.  
    3. Place thumb over the spark plug hole. Crank the engine slowly until compression is felt. It will be easier to have someone rotate the engine by hand, using a wrench on the crankshaft pulley.
    4.  
    5. Align the timing mark on the crankshaft pulley with the 0 degrees mark on the timing scale attached to the front of the engine. This places the engine at TDC of the compression stroke.
    6.  
    7. Turn the distributor shaft until the rotor points to the No. 1 spark plug tower on the cap.
    8.  
    9. Install the distributor into the engine. Be sure to align the distributor-to-engine block mark made earlier.
    10.  
    11. Install the No. 1 spark plug. Connect all vacuum hoses and electrical connectors to the distributor.
    12.  
    13. Install distributor cap, then connect the battery negative cable.
    14.  
    15. Check and/or adjust ignition timing.
    16.  

  4.  

 
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