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Re: Project Underfunded / next phase - LSx carb'd to LSx efi
2-3 seconds when you turn the key to RUN or START? Pump should prime in key on (RUN) for a few secs then turn off. If it pumps for a few secs after starting then cuts off, you likely have a VATS issue. What wire did you use from the truck to power the fuel pump relay?
You can check for voltage at the injector plug with a noid light or DVM while cranking. Also, if they're working, when you pull a plug, you'll know it from the flooded cylinder. Could be a case of the common stuck LS injector. If so, soak 'em in SeaFoam to clean out the gummy ethanol deposits...
Good luck- keep us posted
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