gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Fuel Injector Balance Test With Special Tool|Page 7546 > < Fuel Injector Balance Test With Special Tool|Page 7544
Page 1
background image

Fuel Injector: Testing and Inspection
Fuel Injector Balance Test with Tech 2

Fuel Injector Balance Test with Tech 2

System 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

Fuel Injector Balance Test With Special Tool|Page 7546 > < Fuel Injector Balance Test With Special Tool|Page 7544