Quote:
Originally Posted by Frank Reiner
BD:
Greater familiarity with the operation of the Second Stage of the INAT carburetor would be helpful. The vacuum signal that is supplied to the diaphragm of the Second Stage is entirely internal, originates at the top of the venturies of both stages, and is not connected to any ports that supply a vacuum signal to any external consumer. The operation of the Second Stage, including its fuel flow, is independent of any external vacuum connected devices. The subjects are indeed separate.
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You are right about how the secondary system works. I've had them apart many times and I'm familiar enough with them but I don't work on that stuff every day so it's easy to forget.