My Kia Sportage 2.0 TD 1999, yesterday after the night it had a problem with firing, or rather it fired like an old diesel, it got like a pot, then it went out, and only the third time was ok. Today in the morning it was exactly the same.
Another firing during the day without a problem (on the touch).
In the winter even at - 20 degrees it fired without a problem.
What is the problem of where to start?
Any help will be apprecited.
I didn't find the right solution from the Internet.