Fuel Injector Balance Test With Special Tool

FUEL INJECTOR BALANCE TEST WITH SPECIAL TOOL

Fuel Injector Balance Test With Special Tool:

Injector Balance Test Example (Typical):

TEST DESCRIPTION

Step 1 - Step 7:

Step 8 - Step 10:

The numbers below refer to the step numbers on the diagnostic table.
4. The engine coolant temperature (ECT) must be below the operating temperature in order to avoid irregular fuel pressure readings due to hot soak fuel boiling.
5. The fuel pressure should be within the specified range. If the fuel pressure is not within the specified range, Refer to Fuel System Diagnosis. Component Tests and General Diagnostics
6. The fuel pressure should reach a steady value. If the fuel pressure does not reach a steady value, Refer to Fuel System Diagnosis. Component Tests and General Diagnostics
7. The fuel injectors are flowing properly if the pressure drop value for each fuel injector is within 10 kPa (1.5 psi) of the average pressure drop value. Calculate the pressure drop value for each fuel injector by subtracting the second pressure reading from the first pressure reading. Refer to the examples in the preceding table.