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Home >> Jeep >> 1987 >> Wrangler Base, 2.5 H >> Repair and Diagnosis >> Engine Performance >> System >> Carburetor - Carter BBD 2-Bbl >> Overhaul >> Reassembly >> Accelerator Pump Assembly

Accelerator Pump Assembly

  1. Pour clean unleaded gasoline into carburetor bowl approximately 1/2" deep. Operate accelerator pump plunger several times to expel air from pump passage. Using a small brass rod, hold discharge check ball down firmly on its seat. See Figure .
  2. Raise plunger and press downward. No fuel should be emitted from either intake or discharge passage. If fuel does escape from either passage, check for ball seat damage or dirty ball or seat. Clean passages and retest.
  3. If leakage is still present, attempt to form a new seat. This is accomplished by installing a discharge check ball in leaking seat. Place a piece of drill rod on top of check ball and tap it lightly with a hammer to form a new seat. Remove check ball and discard. Install a new check ball and retest as described above. If service does not correct problem, carburetor replacement is necessary.
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