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Home >> GMC >> 1995 >> Forward Control 7.4 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls - Basic Testing - 6.5L Diesel) >> Basic Fuel System Checks >> Fuel Pump Flow Test
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Fuel Pump Flow Test

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect fuel line at fuel filter inlet. Disconnect fuel injection pump electric shut-off solenoid wire (Pink).
  2. Crank engine 15 seconds. If fuel pump does not supply about 1/2 pint of fuel in 15 seconds, go to FUEL SYSTEM PRESSURE TEST .