Nissan/Datsun 200SX/510/610/710/810/Maxima 1973-1984 Repair Guide

Firing Orders

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Fig. Fig. 1 1973 L18 engine



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Fig. Fig. 2 1974 L18 engine



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Fig. Fig. 3 L20B engine



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Fig. Fig. 4 1980 Z20E (49 states) engine



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Fig. Fig. 5 L24 engines



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Fig. Fig. 6 Z20 engines, except 1980 49 state version

To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.

If a distributor is not keyed for installation with only one orientation, it could have been removed previously and rewired. The resultant wiring would hold the correct firing order, but could change the relative placement of the plug towers in relation to the engine. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your guide to reflect how your engine is wired.

 
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