Hot water heater/leaking hose issue.

strace

Member
May 11, 2021
64
Port Huron, Michigan
Boat Info
1999 Sea Ray Sundancer 270
Engines
454 Mercruiser w/Bravo III Drive
Have a 99 270DA, previous owner said hot water system is "bypassed" due to bottom of tank being rusted out. I'm assuming electrical is bypassed because water is leaking steadily from the hose with the arrow pointed at it only while motor is running. I was advised to disconnect 2 hoses from tank and connect them together with a hose barb taking the tank out of the loop ( not using it anyways) then drain remainder of the tank. This a good idea, safe idea? Tank is junk and no need to replace it at the moment. Advice is appreciated! Have tried to tighten hose clamp and still leaks.
20210529_110554~2.jpg
 
Have a 99 270DA, previous owner said hot water system is "bypassed" due to bottom of tank being rusted out. I'm assuming electrical is bypassed because water is leaking steadily from the hose with the arrow pointed at it only while motor is running. I was advised to disconnect 2 hoses from tank and connect them together with a hose barb taking the tank out of the loop ( not using it anyways) then drain remainder of the tank. This a good idea, safe idea? Tank is junk and no need to replace it at the moment. Advice is appreciated! Have tried to tighten hose clamp and still leaks.View attachment 106259

yea, that would be fine (the Barb thing) but the hoses are probably old as well so I’d get a look at the engine where they feed in and out, it’s probably near the thermostat housing, and use a small length of new hose to close the loop.
 
Thanks for the reply. Figured I would end up replacing the entire hose(s) system, just wanted to make sure "closing the loop" wouldn't cause any unforseen damage.
 
yea, that would be fine (the Barb thing) but the hoses are probably old as well so I’d get a look at the engine where they feed in and out, it’s probably near the thermostat housing, and use a small length of new hose to close the loop.

Might be able just to plug it off at the engines as well.
 
Those are your "heating hoses" that come from the engine. They go through a coil inside the heater and right back out again. So in this case, not only is the heater tank, itself, rotted out, so is the coil. That was just for educational purposes... :)

Follow each hose back to the engine. One will be down by where the big hose attaches to the circulating pump on the front of the engine. The other will right up on top. Get (2) bronze garbaord drain plugs (same kind used for the boat). Remove the two hoses, unscrew the two fittings that are there (pipe to barb fittings) and screw the drain plugs back in in their place. 100% fixed and no chance of old hoses bursting on you at a bad time.
 
yea, that would be fine (the Barb thing) but the hoses are probably old as well so I’d get a look at the engine where they feed in and out, it’s probably near the thermostat housing, and use a small length of new hose to close the loop.
This if you are going to replace tank at some point otherwise lazy’s option is best
 
Looks like someone disconnected the wrong hoses. The black hoses are the ones that should have been disconnected. You can trace them back to the engine and disconnect them there. I'd reconnect the PEX and it'll work to heat water when the boat is plugged in.
 
Thanks for all the feedback. Was able to get it all taken care of this morning without any further issues. Appreciate the help and info!!
 
Most likely will in the future, just wanted a quick fix so the water would stop draining in to my bilge. Gotta find the time to pull the old one, clean everything up and replace all the hoses.
 

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