The cooling water pump is faulty. 2) Larger diesel units should come with a pre-heat switch and all generators should have a start/stop switch. 1. If the fan tape is too loose, it will slip, causing the fan speed to be too low and the air supply effect to be weakened. When using a diesel generator in winter, it is better to ensure that the water temperature is around 80° when preparing the power transmission load.Summer temperatures are high and temperatures are more unusual this summer. If the fuel supply advance angle is too early or delayed, the contact area of the high temperature gas with the cylinder wall increases during combustion, and the time is prolonged, and the heat transferred to the coolant increases, and the temperature of the coolant rises. The water temperature gauge or warning light is incorrectly indicated. If the cooling system is not removed, or the coolant is not replenished in time, the cooling performance will be degraded. Thermostat stuck in open position, or malfunctions, to allow premature opening. Abrupt … When the generated heat exceeds the heat dissipation capacity of the diesel engine, the temperature of the coolant of the diesel engine will also rise. The diesel engine used in construction machinery generally has a higher working temperature. Otherwise, write “cancel” on the invoice, return it and owe nothing.Trailer Life magazine’s core purpose is to enhance the RV lifestyle by creating, collecting and distributing high-quality news, tests and reports about all things RVing. If you like Trailer Life, pay just $18.97 for 11 more issues (12 in all). At this time, the diesel engine has more black smoke, increased fuel consumption, and abnormal sound. Remember not to let the temperature be too high or too low, it will cause damage to the generator set. The injector is not working well. The function of the thermostat is to control the size cycle of the cooling system. If the rubber layer is aged, damaged or the fiber layer is broken, it should be replaced. If the angle is too small, the air supply strength will be insufficient.5. At this point, use a thin steel sheet to carefully return the heat sink to its original position, restore the flat shape of the heat sink, and then use compressed air or a water gun to clean it. The pump itself is damaged, the rotation speed is too low, the scale in the pump body is excessively deposited, and the narrowing of the passage will make the flow rate of the coolant smaller, the heat dissipation performance is lowered, and the temperature of the diesel engine oil is increased.6. For example, the heat sink of the water radiator has a large area of lodging, and there are oil and mud debris between the heat sinks, which will prevent the heat from being emitted. The antifreeze can ensure its high boiling point and reduce the scale generated by the cooling system. The water temperature of the diesel generator set is preferably around 80°, and the maximum temperature cannot exceed 95°! Synthetic engine oils are designed for higher heat loads/applications and longer oil-change intervals.While you are watching the engine-oil temperature, pay close attention to the difference between the engine oil and engine coolant (water). The coolant should be cooler than the engine oil, the reason being engine-oil temperature varies a lot in any motor depending on workload.My oil temp is running 210 -230 my coolant is running 208-219 what could make the oil temp run higher? When engine-oil temperature is just above the boiling point of water (212 degrees), moisture buildup in the crankcase is minimized.It should be noted that modern diesel computers will activate a Check Engine Light (CEL) warning that oil temperature is too high, and even put the engine into a protective mode.You can use the truck’s message center as your oil-change interval guideline or the schedule noted in your vehicle owner’s manual as listed under “Severe Use.”An even better indicator is having your Duramax’s synthetic oil analyzed by an oil lab. Diesel engines are prone to cylinder accidents at 100 ° water temperature and high temperature, so diesel generators should stop working or reduce the load when the coolant exceeds 95 °.1. In 95-degree heat and towing six to seven hours with some steep grades, I was in the 200- to 205-degree range.When discussing “delta,” the difference in temperature between coolant temperature and engine-oil temperature, I think you meant to say that engine coolant temperature should be the cooler of the two, not engine-oil temperature.Bruce W. Smith replies: You are correct, Roy.