Chevrolet Chevette/1000 1976-1988 Repair Guide

Injection Timing

Print

INSPECTION AND ADJUSTMENT





Click image to see an enlarged view

Fig. Fig. 1Remove the distributor head screw and washer



Click image to see an enlarged view

Fig. Fig. 2Zeroing the dial indicator



Click image to see an enlarged view

Fig. Fig. 3Location of the static timing notches on the damper pulley

  1. Check that the No. 1 piston is at TDC of the compression stroke. Make sure that the timing belt is properly tensioned and the timing marks are aligned.
  2.  
  3. Remove the cylinder head cover and check that the fixing plate used in the previous section will still fit smoothly into the slot at the rear of the camshaft.
  4.  
  5. Remove the injection lines as detailed earlier and then remove the distributor head screw and washer.
  6.  
  7. Position a Static Timing Gauge (J-29763) and a dial indicator in the distributor head hole. Set the lift approximately 1mm from the end of the plunger.
  8.  
  9. Turn the crankshaft until the No. 1 piston is 45-60° BTDC and then zero the dial indicator.
  10.  

The damper pulley is notched with eleven lines; four in one position, seven in another. The group of four are to be used for static timing.

  1. Turn the crankshaft until the 18 degrees notch on the damper pulley is aligned with the timing pointer.
  2.  
  3. The dial indicator should read 0.5mm. If it does not, hole the crankshaft in the 18 degrees position, loosen the two nuts on the injection pump flange and move the pump until the proper reading is achieved. Swivel the pump up to retard the timing and down to advance the timing. When adjustment is correct, retighten the pump flange nuts.
  4.  
  5. Remove the dial indicator and install the distributor head screw and washer.
  6.  
  7. Install the cylinder head cover, injection lines and fuel filter.
  8.  
  9. Reconnect all necessary wires and hoses. Installation of the remaining components is in the reverse order of removal.
  10.  

 
label.common.footer.alt.autozoneLogo