vacuum gauge to solve idle issue

4spdragtop said

No such luck Dar, Ill pull the top open tomorrow. Carb was new 4 years ago, but time for a look see.I bought these rods n jets earlier in the spring, a switch may be required?
Wish this happened in the spring. Winters coming, going down to -2 tonight.

Click to expand...

Now see....you should have taken that job offer out here...then I could lend you a few carbs to try!!! ;-)

Seriously, I doubt a rod or jet change is going to fix your problem. While the carbs apart, blow every passage out with air, and check your float levels.

The surging seemed to stop after you did the first rev-up. Could it be that
the choke butterfly was just closed too far?