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HOMESERVICE MANUALSCHEVROLET1997CHEVY VAN G2500, VAN CARGO EXTENDED, 6.5 FREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM & COMPONENT TESTS - 4.3LFUEL SYSTEMFUEL CONTROLCENTRAL SEQUENTIAL PORT INJECTOR BALANCE TEST (CSI)
1997 Chevrolet Chevy Van G2500, Van Cargo Extended, 6.5 F

Central Sequential Port Injector Balance Test (CSI)

1997 Chevrolet Chevy Van G2500, Van Cargo Extended, 6.5 FSECTION Central Sequential Port Injector Balance Test (CSI)
NOTE: Central Sequential Port Injector Balance Test has been revised due to Technical Service Bulletin (TSB) 61-63-16, dated February, 1997. See SMU - SECTION 6E - REVISED INJECTOR BALANCE TEST .

The injector balance test is used to pulse the injector for a precise amount of time, spraying a measured amount of fuel in the intake manifold. As each injector is pulsed, a drop in fuel rail pressure occurs. This pressure drop can be recorded and compared to other injectors. All injector should have the same pressure drop of 1.5 psi (.11 kg/cm2 ).

CAUTION: To avoid possible vehicle fire, wrap a shop towel around fitting to avoid fuel spillage.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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