Turn the canister upside down and fill the tube with spray carburetor cleaner through the bottom fitting. It will soak through the sludge and show the location of the hole in the tube. You'll probably need to have the center bolt installed to keep the carb cleaner in the tube.

Edit: glad you found it! That's what keeps the oil pressure loss to a minimum with the "bypass" system.
Jerry


Last edited by Hotrod Lincoln; 01/14/2012 10:04 PM.
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