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Home >> Oldsmobile >> 1978 >> Custom Cruiser 5.7L Eng VIN N >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Diesel Fuel Injection >> Adjustments >> Injection Pump Timing
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Injection Pump Timing

  1. Engine is properly timed when marks on top of injection pump adapter and pump flange are aligned. See Fig. 7  . If marks are not aligned, adjustment is necessary.
  2. With engine off, loosen 3 pump retaining nuts with Injection Pump Wrench (J-26987). Align mark on pump with mark on adapter and tighten nuts to 18 ft. lbs.
NOTE: Use 3/4" wrench on boss at front of pump to turn pump while aligning marks.
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