Periodically ... the fuel filter can't possibly catch everything. The injectors will get clogged over time ... a good long run (hundred miles or so) at a constant freeway speed does worlds of good for dirty injectors.
The 1991 Nissan 320 Turbo does not have a choke. The engine has electronic fuel injection. There is not a need for a choke with electronic fuel injection systems.
If it has electronic fuel injection and a computer, yes.
it may just need a cleaning; usually about $75
You can prevent fuel injection flooding by not pumping the gas pedal when trying to start the engine. Fuel injection systems do not need any additional fuel when starting the engine.
You may need fuel injection service if you notice symptoms like reduced engine performance, rough idling, difficulty starting, or decreased fuel efficiency. Additionally, if your check engine light comes on, it could indicate issues with the fuel injection system. Regular maintenance, including fuel injector cleaning, can help prevent these problems. If you experience any of these issues, it's advisable to have a professional diagnose the situation.
Fuel injection systems do not need to "bled." However, if Questioner is actually trying to ask, "Should I relieve pressure in a fuel injection system before performing fuel system maintenance?" then the anwer is yes.
A fuel injection system on a car replaces the need for carburetors.
All modern cars do not need tuning. Courtesy of electronic ignition, electronic fuel injection, sensors and a computer on board. It is permanently being tuned and tweaked, according to a mapping program, stored on a chip.
You need to prime the fuel injection system.
If your engine has electronic fuel injection, there is little the home mechanic can do to adjust those items. You will need the proprietary software (and the machine) to do any reprogramming of the fuel to air ratios when the onboard computers are controlling such things.
In my opinion, no. It is a waste of money.
For what machine and why do you need it