INFINITI ENGINE HARD TO START

When I Turn On The Key The Engine Does Not Start Immediately. Most Of The Time It Cranks For A While And Then Starts. I Had The Car Tuned...

Engine Starts On The First Turn, Then Dies. It Starts Again, Only With The Gaccelerator Held Down And 5 To 10 Seconds Cranking...

Car Was Working Perfectly Like Seriously You Could Not Ask For Anything To Run Smoother. Nothing Sounded Bad Ran Smooth. One Day I Parked...

I Have A Hard Start After The Car Is Warm. I Got A Tune Up And New Battery 1 Months Ago And I Thought That Would Fix It But It Hasn't....