Installation ("G" Series)

1992 GMC Magnavan 5.7 KSECTION Installation ("G" Series)
  1. Install new injection pump gasket. Align locating pin on injection pump hub with slot in injection pump driven gear while aligning injection pump timing marks.
  2. Attach injection pump to front cover. Alignment marks made during removal must be aligned. Tighten nuts. Attach pump to drive gear and tighten bolts. Reverse removal procedure to complete installation. Check injection pump timing. See INJECTION PUMP TIMING (DIESEL) in ADJUSTMENTS article in this section.
Fig 1: Identifying Diesel Injection Pump Components
G90B15728Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

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

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.