I have a Maxima with 149k miles and symptoms of a blown head gasket - water/coolant in the oil. Unfortunately, where we were parked in the yard, I didn't notice if oil or water was leaking from the engine after the problem first appeared.
Upon starting the engine teardown and finally getting to the water pump removal, I found the water pump with missing and bent impeller blades and a worn out o-ring groove as shown in the attached photo. http://screencast.com/t/Xqo3vtnz
I've searched this forum and online to find out how I can ensure the cooling/oil systems are correctly flushed so I make sure to get all the "lost blades" or any other debris. I'll be removing the oil pan but not sure what to do besides that.
Any help, links, or posts will be greatly appreciated.