Question: When cycling the throttle while cranking the engine, should you see a shot of fuel going into the throttle body, like you would on a carburated engine?

My buddy has this engine and is getting, what appears to be, no fuel. I told him to start by replacing the fuel filter, then move onto the pump in the tank.

Next question: Does the fuel tank for this engine have that "o" ring seal that a lot of earlier GM engines have?

Next Question: I will most likely be replacing this pump for him (if that's the problem) any hints/tips I should know about removing and replacing the pump.

Next question: is the Throttle body or fuel pump (I'm sure the pump is) electronicaly controlled? The reason I ask is, he said he came home from work one day for lunch and it was running good, then went to go back to work and all it would do is turn over. So I'm wondering; with such a sudden change in the operating condition of the engine, should I be looking towards an electrical problem??

Next question: if he just turns the key to the "ON" position, should we hear the pump turn on??

PS: I will have him buy a haynes manual for this, so if some of these questions will be answered there, let me know.

Thanks in advance :D:D