Maybe we're using different definitions of the same word, but fuel should have nothing to do with whether it cranks or not. The electric starter motor is what cranks the engine. As others have mentioned, make sure you're properly checking the plugs for spark. After a lot of cranking, pull the plugs and see if they're wet/smell like fuel. I still kinda think fuel is the issue here. I only say this because you just had part of your fuel delivery system worked on.