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I've got the initial timing @15deg. tot [Email]mech@36[/Email] and 52 w/vac hooked up. I get ping anything beyond that. I have O experience tunning carbs but it seems to be way rich. Plugs are almost black. Got this carb second hand so I have no idea who's been in it.



Since its a second hand carb, before I did anything else, I would tank off the primary bowl. Maybe the previous owner put 80 + jets in there!!! MAybe it has a blown power valve? Check those two things next and then re-think a strategy before ditching the carb...