Vacuum ports, Where are they? Options

[vin man]

I gave up on my Weber's and got a set of Dellortos. Had them rebuilt professionally and have installed on the new motor (1.8 built out to 2056).

I can't get them running without covering the air intakes on the carbs. I believe I have a vacuum leak somewhere besides thecarbs or intake manifolds.

Wondering if I missed some type of vacuum port on the engine itself. Anyone have a suggestion on where else air could be getting into the engine?

[VaccaRabite]

I'm going to assume you are using dual carbs? Not a single carb running through the throttle body and down the intake runners?

have you gone through the exercise of balancing the carbs?

Anyway, I don't know Dells, but I did have dual IDF webers on my car for a few years and they are somewhat similar. There should be no open ports on the outside of the carbs. If there are any nipples with openings the need to be closed off. A google search will tell you where the vacuum ports are on your Dells.

But I bet you have other issues at hand. How do you know that they are not leaking through the intake runners somewhere? Have you checked?

Are the carbs properly sized for your engine? What size vents and jets are you running? Its very possible you are just moving too much air and you have to choke it off for the car to function.

And remember that the idle circuit is different from the mains, and your car uses the idle circuit a LOT.

We need more information before we can help here. And pictures.

Zach