Yanmar 4JH3-TE coolant overflow

[Irish Rover]

Thanks again all. I assumed the blue hose was the cold inflow and acted accordingly. I'm going to the airport late tonight to pick up a family visitors so I'm not sure if I will get to the boat tomorrow but Saturday for sure we'll see what happens. Not to be jumping my fences before I get to them but if it turns out this is a water heater problem is it fixable or will I just want to dump it and replace it. It's 17 years old so it probably doesn't owe anyone much.

 

[duncan99210]

Thanks again all. I assumed the blue hose was the cold inflow and acted accordingly. I'm going to the airport late tonight to pick up a family visitors so I'm not sure if I will get to the boat tomorrow but Saturday for sure we'll see what happens. Not to be jumping my fences before I get to them but if it turns out this is a water heater problem is it fixable or will I just want to dump it and replace it. It's 17 years old so it probably doesn't owe anyone much.

Dump and replace. The units are sealed during manufacture so removing the coil and replacing it is not possible without opening the unit up. You might just find a Turkish tin smith able to do the job but probably best simply to replace it.