Generac

005421

UnclassifiedFuel

What This Code Means

Air bound injection system; High fuel filter restriction

Possible Causes

  • •Air in the injection system
  • •Clogged fuel filter

Suggested Actions

  1. 1Loosen injection line at the injection pump and allow foamy bubbly fuel spray to bleed from the loosened injection line while cranking. Once foam is replaced with a steady stream of fuel, tighten the injection line.
  2. 2In extreme cases, loosen all injection lines at the injectors to purge air from the system.
  3. 3Replace fuel filter if gauge reads -10 inches of mercury restriction.

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