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Home >> Pontiac >> 2002 >> Aztek AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel System (Gasoline) >> Fuel Injector Balance Test With Special Tool (4.2L) >> Test Description

Test Description

The number below refers to step number in diagnostic procedure.

  1. 3

    Engine Coolant Temperature (ECT) must be below operating temperature in order to avoid irregular fuel pressure readings due to hot soak fuel boiling.

Fig 1: Injector Balance Test Example (4.2L)
G00011503Courtesy of GENERAL MOTORS CORP.
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