Timing Belt: How I Almost Caused Major Damage (And How to Avoid It) [D4EA Engine]

Hi,
today we are back with my 2010 Kia Optima, after we removed and replaced the diesel injectors on the common rail and also the rocker cover gasket on the last 2 videos, it's time to replace the timing belt and water pump.
This Optima have a 2 liter Diesel engine (D4EA) and actually it's my first time in 6 years replacing that timing belt, so I made a horrible mistake.
anyway, I made this video as a guide for amateurs like me, and I mentioned my mistake so you can learn from it and also, there is nothing to be ashamed of. We all have to learn and make mistakes in order to be better at what we are doing.
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The guide is compatible with most makes and models.