C 1500 Yukon 2WD V8-5.3L VIN Z Flex Fuel (2003)
DESCRIPTION
The scan tool is first used to energize the fuel pump. 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 the flow through each injector.
TEST DESCRIPTION
Steps 1-2