Chevrolet Chevette/1000 1976-1988 Repair Guide

Diesel Engines

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Fig. Fig. 1Location of the base idle screw on a diesel engine

  1. Set the parking brake and block the wheels.
  2.  
  3. Place the transmission in Neutral. Connect a tachometer as per the manufacturer's instructions.
  4.  
  5. Start the engine and allow it to reach normal operating temperature.
  6.  
  7. Loosen the locknut on the idle speed adjusting screw and turn the screw to obtain the correct idle speed (see underhood specifications sticker).
  8.  
  9. Tighten the locknut, turn the engine off and disconnect the tachometer.
  10.  

 
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