What are the solutions for high water temperature in Yuchai engines?
3 Answers
Here are the causes and solutions for high water temperature in Yuchai engines: 1. Radiator issues: (1) If the radiator is too far from the engine, causing the fan to operate outside the wind circle, adjust the radiator's installation position; (2) If the air conditioning condenser blocks the radiator, there are two solutions: first, if there's sufficient space in the engine compartment, relocate the condenser; second, if the generator has sufficient output, install an electric fan in front of the condenser. 2. Maintenance and usage issues: Using gasoline below the required octane rating (which is not allowed in principle) or advanced ignition timing can cause engine knocking, leading to high water temperature. The solution is to adjust the distributor to slightly retard the ignition timing.
I've seen the issue of high water temperature in Yuchai vehicles quite a few times. First, you need to check the cooling system to see if the radiator is clogged with leaves or dust, which is especially common in summer. Then, inspect the coolant level and top it up with qualified antifreeze if it's low. Water pump leaks or malfunction are also frequent issues; if the hose temperature feels abnormal, it might be a water pump problem. If the thermostat gets stuck and doesn't open, poor water flow can cause the temperature to soar. Loose fan belts or faulty fan motors can also lead to poor cooling. I recommend first cleaning the radiator and hose connections yourself. If that doesn't work, take it to a professional repair shop for instrument testing. Don't underestimate this issue—prolonged high temperatures can cause cylinder damage, leading to hefty repair costs. Make it a habit to regularly check the cooling system to ensure worry-free driving.
As a driver who frequently operates Yuchai trucks, I usually stop to check when encountering high water temperature. During that long trip, the temperature gauge suddenly spiked, so I immediately pulled over, turned off the engine, and opened the hood to find the coolant level was low. I added spare coolant, but the temperature rose again shortly after. Upon closer inspection, I noticed the fan wasn’t spinning—the belt was loose, and tightening it fixed the issue. I also carry a simple toolkit with items like wrenches and an infrared thermometer. Regularly cleaning dust from the radiator is crucial. From my experience, high water temperature often occurs in summer or when climbing hills, so timely action avoids towing. For routine maintenance, I change the coolant every quarter and inspect the engine bay for leaks. Safety comes first—never push through high temperatures; stop and repair promptly.
