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Home › GMC › 1994 › Jimmy 2D Utility, 4.3 W › Repair and Diagnosis › Engine Performance › Testing & Diagnosis › Engine Controls - Basic Testing › C-4, Basic Ignition System Checks › HEI-Est Distributor › Notes

HEI-Est Distributor: Notes

NOTE: Only basic ignition timing is adjustable in HEI/EST ignition system.
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