hello everyone is my first message here. my car has been having a hard time running while it was hot for a long time. Starts quickly when cold or on first run. But when I go to the market or anywhere and try to start it after 20-30 minutes after the engine reaches its normal temperature, the cranking time is prolonged. sometimes it even feels like it won't work (as if it is choking). There hasn't been a moment when it hasn't worked. No problem idling with normal travel and high speeds. I suspected the petrol filter / regulator and changed it, but it didn't work. If I can add a video below, you can see it. Thank you in advance for your help.
My car only has a hot start problem.

https://streamable.com/5jb9xw
https://streamable.com/elfj60

 

Heat affects the Crank Position sensor and the Cam position sensor. Usually the cam position sensor. Use only Bosh brand.

 

Post 2 may have your answer. But I will offer my story...
My Crossfire is fine, but my Ford Ranger does this - a warm engine means CRAZY cranking to get it started.
When warm, the truck starts easily if I do this:

Get in truck.
Turn key to "ON".
Wait 5 seconds.
Turn key to "Start".

It then starts fine. Try this. If it helps, I think it's time to monitor fuel pressure when starting. With a new filter/regulator, I can't imagine what is wrong, but that's where i'd start.

 

My vote goes to it being a bad fuel pump, when the car is cold it starts on a rich mixture as lots of gas is supplied to the injectors and later after a drive the car is warm and the injectors get much less fuel. If the pressure is low it will not get enough fuel so it refuses to start combustion.
Check the fuel pump pressure.
Just hearing the pump means it is working but only just,

 

You are right. I bring the key to the position before starting it. then the previous position, then forward again. In the meantime, I'm pressing the gas pedal to the full in case it might be useful Then when I start it again (without pressing the gas pedal of course) it works in a shorter time. What I want to ask is: the position before or the position before it enables the gas pump to run.