Mitsubishi Montero, Sport 1998-06

Timing Check

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  1. Before servicing the vehicle, refer to the Precautions section.
  2.  

Before attempting to adjust the ignition timing, be sure of the following:



The engine should be at normal operating temperature.
 
The lights and all accessories should be OFF.
 
If equipped with an automatic transmission, the transmission should be inPN
 
Connect scan tool MB991502 to the data link connector
 
Set up the timing light.
 
Start the engine and run at idle.
 
Verify that the idle speed is 600-800 rpm.
 
Select scan tool MB991502 actuator test -item number 17-.
 
Check that basic timing is with in standard, it should be 3-7° BTDC.
 
Press the clear key on the scan tool, select forced drive stop mode and cancel the actuator test.
 


CAUTION
If the actuator test is not canceled, the forced drive will continue for 27 minutes. Driving in this state could lead to engine failure.

  1. If the base timing is out of specification:
  2.  
  3. Check to see if the distributor is aligned properly
  4.  
  5. Check to see if the timing belt cover and Crankshaft Position (CKP) sensor installation is conditions.
  6.  
  7. Crankshaft sensing blade conditions.
  8.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  

Before attempting to adjust the ignition timing, be sure of the following:



The engine should be at normal operating temperature.
 
The lights and all accessories should be OFF.
 
If equipped with an automatic transmission, the transmission should be in P or N .
 
Connect scan tool MB991502 to the data link connector
 
Set up the timing light.
 
Start the engine and run at idle.
 
Verify that the idle speed is 600-800 rpm.
 
Select scan tool MB991502 actuator test -item number 17.-
 
Check that basic timing is with in standard, it should be 3-7° BTDC.
 
Press the clear key on the scan tool, select forced drive stop mode and cancel the actuator test.
 


CAUTION
If the actuator test is not canceled, the forced drive will continue for 27 minutes. Driving in this state could lead to engine failure.

  1. If the base timing is out of specification:
  2.  
  3. Check to see if the distributor is aligned properly
  4.  
  5. Check to see if the timing belt cover and Crankshaft Position (CKP) sensor installation is conditions.
  6.  
  7. Crankshaft sensing blade conditions.
  8.  

3.0L 12v & 24v



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Insert a paper clip into the 1-pin connector between the primary side of the ignition coil and the noise filter. The connector should not be disconnected.
    CAUTION
    Insert the paper clip along the terminal from the opposite side to the locking pawl of the female connector, as shown in the illustration.



    Click image to see an enlarged view

    Fig. Insert a paper clip into the 1-pin connector between the primary side of the ignition coil and the noise filter



    Click image to see an enlarged view

    Fig. Inserting a paper clip

  4.  
  5. Connect a primary voltage detection-type tachometer to the paper clip.
    NOTE
    Do not use the scan tool. If the scan tool is connected to the data link connector, the ignition timing will be unchanged instead of reverting to the standard ignition timing.



    Click image to see an enlarged view

    Fig. Connect a primary voltage detection-type tachometer to the paper clip

  6.  
  7. Connect a timing light.
  8.  
  9. Start the engine and run it at idle.
  10.  
  11. Check that the idle speed is at 600-800 rpm.
  12.  
  13. Turn the ignition switch to OFF.
  14.  
  15. Disconnect the waterproof female connector from the ignition timing adjustment connector (brown).
  16.  
  17. Use a jumper wire to ground the ignition timing adjustment terminal.
    NOTE
    Grounding the ignition timing adjustment terminal will change the ignition timing to standard.



    Click image to see an enlarged view

    Fig. Use a jumper wire to ground the ignition timing adjustment terminal

  18.  
  19. Start the engine and run it at idle.
  20.  
  21. Check the basic ignition timing is 2-8°BTDC.
  22.  
  23. If the ignition timing is not within the standard value range, check the crankshaft position sensor.
  24.  
  25. Stop the engine, remove the jumper lead from the ignition timing adjustment connector (brown), and return the connector to its original condition.
  26.  
  27. Start the engine and check that the ignition timing is at the standard value of approximately 15°BTDC.
    NOTE
    Ignition timing is variable within about ± 7°, even under normal operating conditions.


    NOTE
    It is automatically further advanced by about 5° from 15° BTDC at higher altitudes.

  28.  

All Others



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  

Before attempting to adjust the ignition timing, be sure of the following:



The engine should be at normal operating temperature.
 
The lights and all accessories should be OFF.
 
If equipped with an automatic transmission, the transmission should be in P or N .
 
Connect scan tool MB991958 to the data link connector
 
Set up the timing light.
 
Start the engine and run at idle.
 
Verify that the idle speed is 600-800 rpm.
 
Select scan tool MB991958 actuator test -item number 17-.
 
Check that basic timing is within specification, it should be 2-8° BTDC.
 
Press the clear key on the scan tool, select forced drive stop mode and cancel the actuator test.
 


CAUTION
If the actuator test is not canceled, the forced drive will continue for 27 minutes. Driving in this state could lead to engine failure.

  1. If the base timing is out of specification:
  2.  
  3. Check to see if the timing belt cover and Crankshaft Position (CKP) sensor installation is correct.
  4.  
  5. Check the crankshaft sensing blade condition.
  6.  

 
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