Toyota Corolla Se saloon 2004 Automatic starts missing due to unknown Reason

[pwuser159480306150]

FOLLOWING ARE THE ISSUES FACED BY ME:

1. A Drop in acceleration
2. Rough or Jerky Acceleration
3. Hard starting condition
4. Black Smoke From Exhaust Pipe
5. Rough idle
6. Misfires
7. Changed Fuel Consumption

FOLLOWING ARE THE THINGS AND REPAIRS I HAVE DONE:

1. Air Flow Sensor has being replaced two times
2. Engine Tuning has also being done.

[Hassan1991]

Get it scanned.
Don't replace parts first diagnose the problem.