Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline >> Fuel Systems >> Fuel Injector Balance Test With Tech 2 >> System Description

System Description

Scan tool first energizes fuel pump and then injectors for a precise amount of time allowing a measured amount of fuel into manifold. This causes a drop in system fuel pressure that can be recorded and used to compare each injector.

scientia non olet · About Mike's Workshop Manuals