GM Astro/Safari 1985-1996 Repair Guide

FIRING ORDERS

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See Figures 1, 2, 3, 4, 5, 6, 7 and 8

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



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Fig. Fig. 1: 2.5L Engine-NL-> Firing Order: 1-3-4-2-NL-> Distributor Rotation: Clockwise



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Fig. Fig. 2: 4.3L Engine, non-HVS -NL-> FiringOrder:1-6-5-4-3-2-NL-> DistributorRotation: Clockwise



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Fig. Fig. 3: Ignition wire routing-early-model 2.5L engine



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Fig. Fig. 4: Ignition wire routing-late-model 2.5L engine



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Fig. Fig. 5: Ignition wire routing-4.3L engine with HEI (coil in cap)



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Fig. Fig. 6: Ignition wire routing-4.3L engine with HEI (remote coil)



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Fig. Fig. 7: Ignition wire routing-4.3L engine with HVS, right side



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Fig. Fig. 8: Ignition wire routing-4.3L engine with HVS, left side

 
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