Carter Bbd leaking throttle body

AJ is right. I've seen some pretty loose bushings that don't leak fuel. If the float level is correct, the fuel pressure is not too high, and the needle is properly sealing, AND if heat perculation is not an issue, they won't leak. When running, engine vacuum "sucks" any leakage "in" and they don't leak when running, either.

When these bushings get bad enough, rather than a fuel leak, unstable idle speed/ idle quality is usually the bigger issue