Distributor keeps adding advanced without stop?

Max1196 said
Does your timing light have multiple functions? As in, is it set on the setting to check an engine with "coil packs" instead of the basic version. Or is it set on 4 cyl instead of 8? Just a thought!
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No switches, just a dial. It's a cheap Harbor Freight light. Im going to try swapping it out today and see what another one says.