Originally Posted by Legolamb
That "thing" is your knock sensor, and yes you need to remove if you want to drain that side of the block. Once removed, you may want to poke around a bit with a small screw driver or piece of wire to make sure there isn't any sediment or rust blocking any more liquid from draining.
Nice pictures and details, thanks for taking the time to document your procedures.
Cool, thanks! I kinda thought so but wanted to double check.
Also, anyone do the pitot tubes as well? I looked at my gauges and don't really want to take that apart to get to the end. Maybe just blow it out from the "gold tube" in the back on out to the pitot assembly?
Added to Thread:
Glad you noted the knock sensor.....definitely a LOT of water still in there! Appreciate it!