Chevrolet Full-size Cars 1968-1978 Repair Guide

Rochester M4ME and E4ME 4-Bbl. Carburetors

Imprimir



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Fig. Fig. 1 Exploded view of a 1976-78 Rochester four barrel carburetor



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Fig. Fig. 2 Component list for the 1976-78 Rochester four barrel carburetor

Float, pump, choke coil lever, fast idle, fast idle cam (choke rod), front and rear vacuum break and unloader adjustments on these two carburetors are identical to those detailed in the M2ME information. Please refer to them. There are, however, a number of procedures that apply only to the 4-bbl carburetors and to specific years. Please refer to the appropriate illustration.

ADJUSTMENTS



Air Valve Rod


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Fig. Fig. 3 Adjusting the air valve rod on the Rochester M4ME and E4ME carburetors

  1. Using an outside vacuum source, seat the choke vacuum diaphragm. Put a piece of tape over the purge bleed hole if so equipped.
  2.  
  3. Close the air valve completely.
  4.  
  5. Insert the gauge between the rod and the end of the slot in the lever.
  6.  
  7. Bend the rod to adjust the clearance.
  8.  

Secondary Lockout


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