Thermoquad help questions

update:
I removed the main rod tree spring, and since I had several left over Edelbrock springs I cut a "pink" to the length of the stock one, and could tell that it was less strong. Installed that, went for a test drive. Idle adjusted to about 14:1 A/F, I could hold a steady in town lower rpm cruise in the 14-15 A/F range, but any throttle at all and it now goes to around 17:1, and obviously not running nearly as strong as the previous 10:1.

If this is due to the spring change only then I guess I would need something in between. But I am at this point working with too many variables. The carb would not slow fully to idle, due to the accelerator pump rod not dropping enough. (even though set to instructions.) So I did a slight bend to that and brought idle down to 800 or so.

Previously (old carb) I was running my advance off full manifold vacuum so tried "T"-ing off the rear port. Seemed I could not get idle screws to do much. Changed advance hose back to the front timed port and then got the idle mix OK. (not sure why this would matter....)

And, my final frustration of the day, I stopped along the road and tried to change the secondary spring slightly. It unwound on me, sounded like it came loose, or broke? Anyway, no matter how many turns I could not longer get any spring to the air valve, so it stayed wide open to drive home.

Had to quit for the day. 32* with snow forecast, so a bowl of hot chili seemed more appropriate. :icon_fU: