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Home >> GMC >> 1987 >> Forward Control 5.7 K, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Carburetor - ROCHESTER M4ME & M4MEF 4-Bbl >> Adjustment >> Accelerator Pump

Accelerator Pump

  1. With accelerator pump rod in specified hole of accelerator pump lever, make sure fast idle cam follower is off fast idle cam. Turn throttle stop screw out until it no longer contacts throttle lever.
  2. Using a "T" scale, measure distance from top of choke valve wall (next to vent stack) to top of pump stem. To adjust, support accelerator pump lever with screwdriver and bend at notch. See Figure.
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