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Home >> American Motors >> 1978 >> Gremlin Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Carter BBD 2-Barrel >> Overhaul >> Reassembly >> Accelerator Pump Assembly

Accelerator Pump Assembly

  1. Check operation as follows. Pour clean gasoline into carburetor bowl (1/2" deep). Operate pump plunger several times to fill cylinder and expel all air.
  2. Using a small brass rod, hold discharge check ball down on its seat. Raise plunger and press downward. No fuel should be emitted from either intake or discharge passage. If fuel does escape from passages, check if ball seat is damaged or dirty.
  3. Clean check ball seat and retest. If leakage is still present, attempt to form a new ball seat. To form a new seat, install discharge check ball and place a piece of drill rod on top of check ball. Lightly tap drill rod with a mallet to form a new seat.
  4. Remove and discard check ball and install a new one. Retest as previously described. If service does not correct problems, replace carburetor.
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