Hyundai Accent Petrol, my car missing - Hyundai Motor 2004 Accent

https://techtips.alleuro.com/wp-content/uploads/2020/10/SKF-Front-Rear-Axle-Nut-Hub-Mount-Lug-Nut-Torque-Spec.pdf

and

https://www.google.com/search?q=2015+%22hyundai+accent%22+rear+wheel+hub+torque+spec

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have a compression test done . I suspect that you have a loose valve seat insert in the head

Maybe your clutch slave cylinder is bad.

check the clutchrelease bearing holder

Yes they miss indexed the o-ring or it has slipped out of position

check the fuel pump pressure after putting the petrol in and then it will not start as the pump could have a low pressure ,as the car runs the EVAP system is pressurising the tank making up for the shortfall in the pump pressure

The fuel filter is located underneath the car, near the fuel tank. Make sure to remove the fuel pump fuse while the car is running to relieve the fuel pressure before replacing the fuel filter.

yes you hit the nail right on the head there,, its the tem sensor playing you up, its telling the car's computer its warm when its still cold and it cuts back the fule like pushing in the choke,,, this causes the engine to miss fire and lack power till its warm change the sensor

I have a 2005 Hyundai Accent, It is not possible to fill the tank if you are letting the petrol pump run at full speed.Trying to fill up quickly it will only build up pressure and cut off. Next time you fill up just pull the petrol pump handle half way, it will take longer to fill but you wont get the blow back. Modern petrol pumps are getting quicker all the time.Hope this helps you.