2010 Hyundai Sonata Repair Part 9

I've always wanted to take a car that's been in a fender bender and restore it to new condition. This Hyundai is the perfect candidate, with both front and rear bumpers having been tapped.
I really want to fix this coolant leak. I hoped it was the o-ring. It's not...
0:00 Cleaned the hood liner
1:39 Fixing the coolant leak at the thermostat housing
3:56 Clean up rusty bolts
4:20 Disconnecting plugs to reach the housing
5:06 Airflow to the computer
5:40 Thermostat housing is out
7:28 Couldn't find damage
8:57 Replacing the o-ring
11:38 The o-ring didn't fix the leak...
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