Tried starting after sitting a long while, the tank wasn't drained, so i swapped out the fuel pump, filter, and plugs, and had the injectors professionally cleaned. guess what!, still no luck. It'll crank and fire up with a little starting fluid in the airbox, but dies right after. There's no OBD2 read unless the engine's running, so I'm flying blind there. for what its worth, I know the battery's good, cos I had it hooked up to a running truck while working on it. Feels like fuel delivery is still the issue idk, can anyone help with this ?