I’ve got a 2000 Infiniti G20 same engine as a Sentra, just the other
day i tried to start the car and it turns over and fires up but
immediately just goes dead after,  I can push down on the accelerator
after starting to rev up the rpm but soon as i let go the engine just
goes dead again, not sure if i’m damaging the vehicle more when i do
that cause a thin cloud of smoke comes from the engine when i rev it
up.  i’ve had issues with my thermostat in the past, but dont know if
that would be a reason for this issue.  I’ve got 150k on the car, and
no major accidents in the past.  If anyone can help it would be
enormously appreciated.