If it's like a QJ, the vacuum holds off the enrichment, correct?
If so, a vac leak wouldn't explain a lack of enrichment, would it? Although if the vac was so low that the valve never closed and you compensated by enriching the idle, then maybe?? I'd say get a vacuum gauge before assuming??
Or maybe it's all about your vacuum advance and the legendary "carb problem is an electrical issue" has snuck under your hood?
Might be worth verifying your vacuum advance can with a mighty vac and a timing light?
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