Quote:
Originally Posted by jhack82
oldcolumbia, thank you for all the help, this does't make sense then, or I am not understanding how this works. I had accidentally left my bilge pump off when the exhaust piece finally decided to break off, so the bottom of my boat was covered in warm water that had escaped out of the exhaust. i did not taste it, and it was black too, but there was so much of it, it had to be seawater, and I just traced the hose to the saltwater intake as well. looking at my manual, I see it is a freshwater system, but I am pretty sure its seawater from the heat exchanger that is flowing into the exhaust, and overboard from the water lift muffler, not the engine coolant. also, this prompted me to look more thoroughly at the waterlift muffler, it has no water outlet, is this right? does the exhaust and the water all exit through the exhaust hose? I am thoroughly confused now. where do you get the manufactured elbow? again thanks
regards,
jhack82
s/v Firefly
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Yes, it's salt water. All engines inject water into the exhaust system just after it exits the engine to cool the exhaust. The waterlift muffler just adds a place where the water collects temporarily to provide a muffling effect so that your exhaust isn't too loud. That water is then blown out of the boat exhaust along with all the exhaust gasses.
One of the things you need to get into the habit of doing is checking the exhaust a few seconds after you start the engine to assure that water is in fact coming out of the exhaust. That assures you that the cooling system is working before you harm something by running too long without it.