Powertrain

Intake Air Distribution and Filtering

~1min read

The air intake system consists of the following:

  • Air Cleaner (ACL)
  • ACL element
  • Mass Air Flow (MAF) sensor
  • ACL outlet pipe

The air intake system:

  • cleans intake air with an ACL element.
  • measures airflow with a MAF sensor.

The ACL contains an ACL element made of treated, pleated paper. A new ACL element must be installed periodically as scheduled. Engine performance and fuel economy are adversely affected when maximum restriction of the ACL element is reached.

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A quick Ford Focus quiz: every answer comes with an explanation and a link to the manual page.