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When you turn the key, you should have 12v at the pump. There should be constant and quite noticable hum. You should get lots and lots of gas flowing. There is a gallons per minute spec for the pump. With the system closed, and pressure gauge included in the injector ring, you should see 32 psi and when the pump is turned off, it should stay at 32 psi for a while.
The first thing I'd check is if the tank's outlet is clogged. Are you getting a good gush out of the fuel line when it's open to the air? Is there sediment coming out (bits of rust)? If so, get the tank boiled out before continuing.
It's possible the pump is just gummed up from sitting. The cure (presuming it's curable) is to run fresh gas with lots of cleaner through it. Starting with a near empty tank, put in a big bucket of cleaner and let the pump push it through the system with the engine not running.
-CTH
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