Slight miss in my 69 Z28

[sixt9rsx33]

I rebuilt my carb, and still have the same problem. I am glad I rebuilt the carb because the bowls, and the metering blocks had white fine silt/sludge in the bottom of them. I am surprised the thing even ran. Before I rebuilt the carb and even now the engine does not idle good. When I try and set the idle at 1000 rpm it dances above and below 1,000. And when I plug and unplug the vacuum advance it does not respond as good as it should. So I think Mike's theory about the vacuum canister could bare fruit?? Before I do that I will try and test the canister. Stay tuned....

The thing runs like a scolded dog though once you get beyond 1500 rpm.