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Home >> Chevrolet >> 2000 >> C3500 HD 7.4 J, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 291 (Engine Controls - System & Component Testing - 8.1L) >> Fuel Systems >> Fuel Injector Balance Test With Tech 2 >> System Description
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System Description

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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.

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