What should the opening temperature be on a marine cooling system?
Most thermostats will have the opening temperature stamped somewhere on the part, and should reach full stroke at approximately 20 degrees above the opening temperature. Thermostats are not repairable and should be replaced with the manufacturers specified part as these are system specific components.
What should the opening temperature of a water thermostat be?
Verify that the thermostat functions properly by inserting the thermostat into a pot of boiling water. Most thermostats will have the opening temperature stamped somewhere on the part, and should reach full stroke at approximately 20 degrees above the opening temperature.
What should the water temp be in a heat exchanger?
This means that if you were operating in 80 degree F water conditions, the water temperature exiting the heat exchanger and entering the exhaust risers should be in the range of 130 degrees F. The normal temperature tolerable to the touch is 140 degrees F.
Can a bad temperature gauge cause a marine engine to fail?
Many inboard & I/O marine temperature sending units are the same basic devices produced for automotive applications. Since automotive engines normally operate at temperatures higher than marine engines, these devices can sometimes provide inaccurate readings. Bad gauges are one of the most common causes of problems.
What should the temperature of an emgine be?
How smoothly an emgine runs can INDICATE (but, not prove) that it is (or, not) running at the correct temperature. The normal operating temperature of the coolant in an engine is about 210F to 240F degrees. The thermostat OPENS at 195F degrees; but, the temperature continues to rise to the normal operating temperature.
What should the temp of an engine be?
As per the previous post, normally your gauge has no numbers, they just confuse drivers, but an operating range; and if the gauge is about halfway up that’s your normal operating temperature. Any major deviation from that is cause for concern and should be investigated.
What should the temp of the coolant be?
The thermostat OPENS at 195F degrees; but, the temperature continues to rise to the normal operating temperature. The temperature of the coolant can rise above 212F degrees because coolant is pressurized (NOT because the water is mixed with antifreeze). Boil-over won’t occur until about 265F degrees, because of the pressurization (15 or 16 psi).
What should the radiator temp be on a Bentley?
Now, just to add to the confusion, the ECM activates the high speed radiator cooling fan at 122C / 251F which also activates the EHPS cooling fan (if fitted). The Bentley manual does have conflicting info but you should be able to see where the average temp range is.