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Old 06-19-2011, 01:25 AM
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Fuel in vacuum modulator line

About 3 months ago, I pulled my vacuum line off my Turbo 400 modulator and noticed fuel in the line. I drained it, and now during a rebuild, the tech noticed the line had fuel in it again.

I'm pulling the vacuum from the base plate on the rear Holley carb (near the secondary rod). Running a tunnel ram with no factory vacuum ports.

If the solution is to tap a hole in the manifold, I'm fine with that, but where and why would it make much difference than being sourced at the carb, if the entire vacuum supply is full of air/fuel mixture?

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