[chris3racing]

I have a 750 Holley that has developed a leak through the base of the carb. Fuel is running out though a hole in the base, beside the base screw. This hole goes up into the area behind the power valve. I have change the power valve and changed the power valve gasket and when the fuel goes into the fuel bowl then fuel start to run out this hole. Any idea how to fix this?

Added a photo. This is the front, primary. of the carb. The cavity is where the backside of the metering block, with head of power valve goes. The hole to the right is threaded and is where one of the base plate screws go in. The hole to the left is where the fuel is running through and coming out the base of the carb.