What happened to the slow ignition of the old Fit?

The engine has carbon deposit or the principle of electronic control system is faulty.

Check whether the oil throttle is dirty, clean it up, check whether there are problems with the spark plug and water temperature sensor, and whether the battery starting voltage is normal. It is recommended that the repair shop conduct a comprehensive inspection.

The first thing to understand is that this difficult situation (especially in winter) is not a real car failure, but an illusion.