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Hi guys, bit of a perplexing problem after installing new parts. Maybe someone could shed some light on it.
Boat is a 2011 210 Coastal with the Crusader 409. Recently changed the exhaust elbows after one of them was found to be leaking coolant into the exhaust. On testing the boat in the water it ran cool on the gauge (140-150 instead of 175) but the elbows themselves felt a lot hotter than usual. Boat ran fine and oil pressure and everything else appeared to be good. After a little while running the check engine light came on and remained on. After plugging in the diagnostics it was giving a exhaust temperature warning which did seem to fit with the elbows being hotter than normal. This is the non CES engine and doesn't have the elbow sensors so I am not sure which sensor was picking up that high temperature?
The mechanic checked the thermostat in the heat exchanger and I believe it is operating correctly.
My concern is that perhaps the coolant was not added in sufficient quantity and possibly not purged of air. I remember refilling the coolant before and it took somewhere around 20 litres to fill the system. I am not sure how much was added at the workshop at this point. Could there be an airlock in the system causing the coolant not to circulate to the elbows? That would possibly account for the low gauge reading as I believe that sensor reads coolant temperature? The elbows themselves are then not getting circulation and heating up to give the code?
Thanks in advance.
Boat is a 2011 210 Coastal with the Crusader 409. Recently changed the exhaust elbows after one of them was found to be leaking coolant into the exhaust. On testing the boat in the water it ran cool on the gauge (140-150 instead of 175) but the elbows themselves felt a lot hotter than usual. Boat ran fine and oil pressure and everything else appeared to be good. After a little while running the check engine light came on and remained on. After plugging in the diagnostics it was giving a exhaust temperature warning which did seem to fit with the elbows being hotter than normal. This is the non CES engine and doesn't have the elbow sensors so I am not sure which sensor was picking up that high temperature?
The mechanic checked the thermostat in the heat exchanger and I believe it is operating correctly.
My concern is that perhaps the coolant was not added in sufficient quantity and possibly not purged of air. I remember refilling the coolant before and it took somewhere around 20 litres to fill the system. I am not sure how much was added at the workshop at this point. Could there be an airlock in the system causing the coolant not to circulate to the elbows? That would possibly account for the low gauge reading as I believe that sensor reads coolant temperature? The elbows themselves are then not getting circulation and heating up to give the code?
Thanks in advance.