When you unscrewed the on-engine fuel filter you may have forgotten to disconnect the water sensor connector. So, the wires at the bottom of the filter housing for that sensor probably got twisted a bit. I've been told that doing that can cause a problem that requires replacement of the housing which is over $100.
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
I'm glad you showed the engine cowling at 7:57. I was wondering the whole time if this was the fuel injected version.
When you unscrewed the on-engine fuel filter you may have forgotten to disconnect the water sensor connector. So, the wires at the bottom of the filter housing for that sensor probably got twisted a bit. I've been told that doing that can cause a problem that requires replacement of the housing which is over $100.