AMC Coupes/Sedans/Wagons 1975-1988 Repair Information

Holley 5210-C Carburetor

Print

See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the Holley 5210-C carburetor components

This carburetor is used on the 4-121 engine.

ADJUSTMENTS - Float Level



  1. With the carburetor air horn inverted, and the float tang resting lightly on the inlet needle, insert the specified gauge between the air horn and the float.
  2.  
  3. Bend the float tang is an adjustment is needed.
  4.  

Fast Idle Cam

  1. Place the fast idle screw on the second step of the fast idle cam and against the shoulder of the high step.
  2.  
  3. Place the specified drill or gauge on the down side of the choke plate.
  4.  
  5. To adjust, bend the choke lever tang.
  6.  

Choke Plate Pulldown (Vacuum Break)

1977-79 MODELS
  1. Remove the three hex headed screws and ring which retain the choke cover.
  2.  


CAUTION
Do not remove the choke water housing screw if adjusting on the car. Pull the choke assembly back out of the way.

  1. Push the diaphragm shaft against the stop. Push the coil lever clockwise.
  2.  
  3. Insert the specified size gauge on the down side of the primary choke plate.
  4.  
  5. Take the slack out of the linkage and turn the adjusting screw with a 5 / 32 in. Allen wrench.
  6.  

1980 MODELS
  1. Attach a hand vacuum pump to the vacuum break diaphragm; apply vacuum and seat the diaphragm.
  2.  
  3. Push the fast idle cam lever down to close the choke plate.
  4.  
  5. Take any slack out of the linkage in the open choke position.
  6.  
  7. Insert the specified gauge between the lower edge of the choke plate and the air horn wall.
  8.  
  9. If the clearance is incorrect, turn the vacuum break adjusting screw, located in the break housing, to adjust.
  10.  

Secondary Vacuum Break

1977-78 MODELS
  1. Remove the three screws and the choke coil assembly.
  2.  
  3. Place the cam follower on the highest step of the fast idle cam.
  4.  
  5. Seat the diaphragm by applying an outside source of vacuum.
  6.  
  7. Push the inside choke coil lever counterclockwise for 1977; clockwise for 1978, to close the choke valve.
  8.  
  9. Place a gauge of the size specified in the chart between the lower edge of the choke valve and the air horn wall.
  10.  
  11. Bend the vacuum break rod to adjust.
  12.  
  13. Replace and adjust the choke.
  14.  

Choke Unloader

  1. Position the throttle lever at the wide open position.
  2.  
  3. Insert a gauge of the size specified in the chart between the lower edge of the choke valve and the air horn wall.
  4.  
  5. Bend the unloader tang for adjustment.
  6.  

Secondary Throttle Stop Screw

  1. Back off the screw until it doesn't touch the throttle lever.
  2.  
  3. Turn the screw in until it touches the secondary throttle lever. Turn it in 1 / 4 turn more.
  4.  

Fast Idle Speed

  1. The engine must be normal operating temperature with the air cleaner off.
  2.  
  3. With the engine running, position the fast idle screw on the second step against the shoulder of the high step. Plug the EGR Port on the carburetor.
  4.  
  5. Adjust the speed by turning the fast idle screw.
  6.  

 
label.common.footer.alt.autozoneLogo