Does anyone have any ideas about...
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12-07-2020 07:55 PM
Does anyone have any ideas about an overheating engine? 8.1L Mercruiser on a 340 Sundancer. So far, I’ve replaced the temperature sensor, the seawater pump, and the heat exchanger. The engine overheats after 20-30 minutes. Local techs haven’t been able to pinpoint the problem. Any new ideas?
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12-08-2020 11:18 AM
Start w/ the basics, is the raw water flow acceptable, has the raw water intake been inspected, is the antifreeze flow acceptable, have all the hoses been removed for inspection for internal obstructions, has the thermostat been replaced?
Has the engine been inspected for a head gasket failure?
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12-08-2020 11:21 AM
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12-08-2020 12:11 PM
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12-08-2020 01:00 PM
If the exhaust elbows are cool to the touch then pull the cap on the antifreeze coolant when cool - look for sludge. If the wrong AF type was mixed with Dexcool it creates a nasty gel that blocks cooling.
-Kevin
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12-12-2020 09:55 PM
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12-13-2020 09:00 AM
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12-14-2020 02:00 AM
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01-24-2021 11:20 AM
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01-24-2021 03:22 PM
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