Fuel Injector Balance Test With Special Tool

Schematic:

Injector Balance Test Example:

TEST DESCRIPTION

Steps 1 - 5:

Steps 6 - 8:

CAUTION: Refer to Shop Towel Fuel Leak Caution in Service Precautions.

The numbers below refer to the step numbers on the diagnostic table.
4. The fuel pressure should be within the specified range.
5. The fuel pressure should reach a steady value.
6. If the pressure drop value for each fuel injector is within 10 kPa (1.5 psi) of the average pressure drop value, the fuel injectors are flowing properly. Calculate the pressure drop value for each fuel injector by subtracting the second pressure reading from the first pressure reading. Refer to the Injector Balance Test Example.