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Which adjustment does a modern engine's base timing have?

  • A.None, since the controller determines it entirely
  • B.A distributor body clamp, which is slackened and the body rotated in order to set the timing correctly
  • C.A vernier adjustment
  • D.A software setting, which is altered with a scan tool during the service of the vehicle when required

Answer: A

With a fixed crankshaft sensor there is nothing to adjust; the timing is calculated from the map. Software calibration genuinely is possible with the right equipment, which makes the last option real for a tuner rather than a technician. Checking which component actually carries the load settles most questions of this kind at once. Most errors here come from carrying across a result from a neighbouring case where it does not hold. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.

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