How to solve the high water temperature issue of CFMOTO 650MT?
3 Answers
Installed radiator guard mesh, it is recommended to remove it, because the 650MT is a road-oriented ADV, the radiator is not so easily damaged, and the guard mesh may actually affect heat dissipation. You can try replacing it with a higher-grade coolant.
My CFMoto 650MT also had an overheating issue last summer. First, I checked the coolant level and found it was low. After adding some coolant, the problem was temporarily alleviated. Then, I removed the engine guard and cleaned the radiator gaps, which were completely clogged with lint and insect remains. Later, I also noticed that the fan was intermittently working. Upon opening the relay box, I found a loose wire. After reconnecting it firmly, the fan started normally after a ten-minute test. By the way, it's important to pay attention to rinsing the radiator fins during regular car washes, especially after long trips through farmland areas where willow catkins and rice husks can easily get stuck in the gaps. If overheating persists after ruling out these issues, it might be necessary to consider whether the thermostat is stuck or the water pump impeller is damaged. In such cases, it's best to have a professional mechanic check with pressure testing equipment.
Don't rush to repair when encountering high water temperature, handle it case by case. If the temperature rises slowly in traffic, find a safe place to park and idle, then turn on the temperature switch near the fuel tank cap to force the fan to work (the exact location is in the manual). If there's a sudden high temperature while riding, immediately turn off the engine and push it to a shady spot to cool for half an hour. Basic checks in three steps: first, check if the coolant level in the reservoir is above the MIN line; second, open the engine cover and feel if the upper radiator hose is hot; finally, check if the fan starts automatically. The cooling system of the 650MT is very stable during high-speed cruising, but it tends to overheat when riding mountain roads with prolonged low-gear high RPM. It's recommended to control the RPM above third gear. If you need to top up the coolant yourself, remember to use genuine blue antifreeze and avoid mixing it with tap water.
