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Home >> Chevrolet >> 1997 >> C3500 HD 7.4 J, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Controls - Basic Diagnostic Procedures - 6.5L Diesel) >> Basic Fuel System Checks >> Fuel Pump Flow Test

Fuel Pump Flow Test

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  1. Disconnect fuel line at fuel filter inlet. Disconnect fuel injection pump electric shut-off solenoid wire. See the WIRING DIAGRAMS article.
  2. Crank engine for 15 seconds. If fuel pump does not supply about1/2 pint of fuel in 15 seconds, go to FUEL SYSTEM PRESSURE TEST.
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