Fuel Injector Balance Test With Tech 2
FUEL INJECTOR BALANCE TEST WITH TECH 2SYSTEM DESCRIPTION
The scan tool is first used to energize the fuel pump relay. The scan tool is then used to pulse each injector for a precise amount of time allowing a measured amount of fuel into the manifold. This causes a drop in system fuel pressure that can be recorded and used to compare each injector.
TEST DESCRIPTION
Steps 1-5:
Steps 6-8:
The number below refers to the step number on the diagnostic table.
3. 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.