EDIT:
I think I’ve found the problem. See the last post.
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I’m getting my engine broken in with a single carb. The fuel pump is located in the engine compartment. When I hook the carb up to the fuel line in the car, it doesn’t get fuel. The pump never quiets down, and no fuel.
When I put a fuel line from the fuel pump directly to a gas can next to the car, it takes fuel and runs fine. The pump quiets down once it gets fuel. Everything works fine.
When I blow air back through the fuel line from the engine compartment, with an air hose, you can hear it coming out in the gas tank. So I don’t think the lines are clogged.
Any ideas why I’m not getting fuel out of the main line with the pump? The line is a hard line. It looks like someone has replaced the plastic lines. The car had carbs when I bought it a few years ago.