1990 Plymouth Laser Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Electronic Spark Advance Check: Notes

ELECTRONIC SPARK ADVANCE (Degrees BTDC @ RPM)

Application Man. Trans. Auto. Trans.
2.2L Non-Turbo 17-25 @ 2000 12-20 @ 2000
2.2L Turbo 29-37 @ 2000 29-37 @ 2000
2.5L Non-Turbo 17-25 @ 2000 17-25 @ 2000
2.5L Turbo 21-29 @ 2000 30-34 @ 2000
3.0L (VIN 3) 30-38 @ 2000 34-42 @ 2000
3.0L (VIN U) N/A N/A
3.3L (1)
Federal N/A 24-32 @ 2000
California N/A 33-41 @ 2000
(1) Ignition timing is not adjustable.
WARNING: On the 3.0L V6, the firing order and the spark plug connection order on the top of the distributor do not match. Circuits internal to the distributor cap differ from the external spark plug wire connections. This is intentional and is done to avoid spark plug wires crossover. See Figure.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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