Carburetor throats stopped matching Options

[98101]

I pulled the carbs to install a new linkage, and blew out the jets while I was at it. The two carbs are synchronized with each other better than they've ever been, but now there's a discrepancy within one of the carbs (DRLA 45s). I'm wondering if I bent a throttle plate, or if there's something else I did that could cause this?

The lower one is cylinder 3, if that matters. There was a slight discrepancy before, but now they're further apart.

[stugray]

An intake leak would do that.

Spray some WD40 (or even water works) around the base of the carbs and base of the intake manifolds and see if it make the engine run different.
Some people use starting fluid.

Some carbs have vacuum ports at the base. Maybe you knocked a cap off?

You should be able to look down your throttle bodies and see if you can see any gaps on the butterflies (but it is much easier to do with them out and a flashlight behind them).

[98101]

An intake leak would do that.

Spray some WD40 (or even water works) around the base of the carbs and base of the intake manifolds and see if it make the engine run different.
Some people use starting fluid.

Some carbs have vacuum ports at the base. Maybe you knocked a cap off?

You should be able to look down your throttle bodies and see if you can see any gaps on the butterflies (but it is much easier to do with them out and a flashlight behind them).

Thanks -- I'll try those things.

One other detail: there was previously an open vacuum port (nearest #4) that I sealed off. But unsealing it didn't seem to affect this condition.