Ever since we had the boat, the engine will briefly overheat if it is not left to idle for a very long time. Once it is brought down to temperature it will not overheat again even if you drive around at WOT.
Thought it was a sticky thermostat but that tested fine.
All the usual things have been checked or overhauled: heat exchanger, exhaust elbow, raw water pump. Tons of water flow out the exhaust.
Confirmed it is not an indication issue but checking with an handheld heat sensor.
One thing I did notice is that the plumbing for the hot water heater is different from another 4.236 I saw. Both sides are plumbed off close to the thermostat. How are they plumbed in on other boats ?
Thanks,
Max
Thought it was a sticky thermostat but that tested fine.
All the usual things have been checked or overhauled: heat exchanger, exhaust elbow, raw water pump. Tons of water flow out the exhaust.
Confirmed it is not an indication issue but checking with an handheld heat sensor.
One thing I did notice is that the plumbing for the hot water heater is different from another 4.236 I saw. Both sides are plumbed off close to the thermostat. How are they plumbed in on other boats ?
Thanks,
Max