Slow Ignition? GX 470 2005

[Spikeh]

Greetings

My father has been running into some issues with this particular model as of late, he has replaced most of the sensors, as far as i know it's the valve timing, coolant, regulator in and output.

But it keeps struggling on the ignition, i will attach a video of it https://streamable.com/cboeb

Any clues about what is going on i would highly appreciate, might make a mistake or two since I'm not car savvy and language barrier with name parts, and this might be a common issue talked to death but i'm not even sure how to begin researching for this so i'm sorry if it is a repetitive topic.