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Air Injection Check Valve Issues by John Coxx is a document available to read on EtoBox.
The signs of a failing injector pump are a rough running engine, reduced power, and check engine light on, with possible misfires causing incorrect O2 sensor readings. Tests include using a scan tool to energize an electric pump or checking for airflow at 1500rpm with a belt-driven pump, and listening for excessive noise. There are three types of pumps: pulse-driven, belt-driven, and electric controlled by the PCM. The air injection system contains management, diverter, relief, switching, and check valves t
- Author
- John Coxx
- Language
- EN