Do not assume that just because it fits it will function properly. Over-cooling can only result from the thermostat not functioning properly.Ĭheck to make sure that the thermostat is of the right type. In order to make sure that such a system, when new and clean, does not over-cool, a thermostat is used to control the flow of coolant to the heat exchanger. This compensates for the inevitable decrease in cooling capacity that results from the normal buildup of dirt on the heat transfer surfaces. Any good Fresh Water Cooling System should have excess cooling capacity.
Though the most common problem is overheating, the opposite may also happen and will create long-term problems. Restriction in the heat exchanger inlet.Restrictions on pressure side of jacket water pump.Restrictions on suction side of water pump.Restrictions on the outlet side of the raw-water pump.Restrictions on the inlet side of the raw-water pump.Make sure thermostat functions properly.Check to make sure that the thermostat is properly installed.Check to make sure that the thermostat is of the right type.Before investigating a suspected temperature problem, check your temperature gauge against a thermometer of known accuracy. Temperature gauges, especially electric, are often inaccurate and have temperature scales that are difficult to interpret. Any temperature that reads outside of this range is abnormal and should be investigated.īefore trying to diagnose a temperature problem, check the temperature gauge.
MARINE DIESEL ENGINE COOLANT STOP LEAK FULL
A new clean system under moderate load should operate at the lower end of this range and a dirty system under full load might operate in the upper range. Most marine FWC thermostats open at 160☏ and will be fully open at approximately 180☏. Shop the PPT Online Store to Buy Mercruiser Closed Cooling Systems ….Read More
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