Toyota Celica/Supra 1971-1985 Repair Guide

FIRING ORDER

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See Figures 1, 2, 3 and 4

The firing order is the order in which spark is sent to each cylinder. The spark must arrive at the correct time in the combustion cycle or damage may result. For this reason, connecting the correct plug to the correct distributor terminal is critical. To avoid confusion, always replace the spark plug wires one at a time.



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Fig. Fig. 1: Engine: 8R-C and 18R-C -nl-> Firing order: 1-3-4-2-nl-> Distributor rotation: clockwise



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Fig. Fig. 2: Engine: 20R, 22R and 22R-EC-nl-> Firing order: 1-3-4-2-nl-> Distributor rotation: clockwise



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Fig. Fig. 3: Engine: 4M-E and 5M-E -nl-> Firing order: 1-5-3-6-2-4-nl-> Distributor rotation: clockwise



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Fig. Fig. 4: Engine: 5M-GE-nl-> Firing order: 1-5-3-6-2-4-nl-> Distributor rotation: clockwise

 
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