On a recent trip to the congaree river in SC I noticed no water coming out the pee hole on my engine (2005 Mercury ELPTO 50 HP). I started freaking out because it seemed like it was smoking a little too, but no alarm buzzer and I know that it works. It turns out that I had snad in the line that goes from the pisser fitting thingie to the block on the end near the pee hole. got it cleaned out and I got water flow again. Should I be worried about more trash throughout the engine and can I flush it anyway. It runs good still, so I don't think it got too hot or anything. I should probably stick an impeller in it anyway, it's never had one, but should I be worried about water passages being blocked and the engine only getting hot on one cylinder or something. Also what does ELPTO stand for. Thanks fellas!