Carb swap fuel tank sump? - Mustang Evolution

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Old 04-15-2013, 07:52 PM   #1
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Join Date: Aug 2012
Region: Georgia
Posts: 11
Carb swap fuel tank sump?

When you swap is it a must for you to sump the fuel tank? I have removed the factory fuel tank and extended the line to the bottom of the tank. I've run all new fuel line (3/8) from tank to carb, the fuel pump is a week old (holley avenger) and the carb (holley 600 vac seconday) is a week old. I have a lc1 on it and it's showing I am running way to lean. I also have a vacuum gauge in the car no vacuum leaks. I think I've covered all the bases I can and don't know what else to do and figured I'd turn to the experts I Preciate any help ill add on idle the mixture is perfect but once you start to get on it at all and specially at wot the gauge reads lean and at wot it'll almost go full lean and it'll start busting up

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