1982 Porsche 928 Automatic TransFACTORY OEM SERVICE PROCEDURE

BOSCH Electronic Ignition System: Adjustment

No adjustment should be attempted on ignition system, except spark plug gap and ignition initial timing. Air gap is non-adjustable. However, it should be visually checked when testing. If specified clearance does not exist, replace components.

Fig 1: Wiring Diagram of Typical Bosch Electronic Ignition System (Except Mercedes-Benz)
G09323412Courtesy of NOT AVAILABLE
Factory Service Tools

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When to See a Mechanic

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

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

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