Quote:
Originally Posted by raycow
If your engine likes so much initial timing, but pings when you punch it at highway speed, your vacuum advance may be a bit wonky. Check it with a timing light at idle, first with the vacuum line disconnected, and then connected to a source of full manifold vacuum (on some carbs the distributor port doesn't get full vacuum at idle).
Ray
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Thank you for the advice. I will try that, but can you describe more on checking and fixing my vacuum advance?