sgolds

Mine came with a rebuilt Rock Auto q jet, it starts to run shaky and sometimes bogs from a start when it's warmed up. Kind of a rhythmic shaking, doesn't stall but seems almost like a misfire. Any idea what might cause this?

66SportCoupe

With just replacing the carb i would be checking for a vacuum leak of some sort.

oldcutlass

Shaking means misfiring.

redoldsman

Put a vacuum gage on it and see how much vacuum it is pulling. It should be at least 15 inches. I am betting vacuum leak.

Vintage Chief

And, while you have the vacuum gauge hooked up adjust each of your A/F mixture screws (independently) to the highest vacuum you can achieve.

sgolds

sgolds

Yeah I'll have to work on checking the vacuum with my vac gauge when the temp here gets milder and the roads clear of salt etc.