Could be a blown head gasket or one of your mates is playing tricks on you. Is there any water in the engine oil, it will be a creamy white sort of colour. If you have access to a exhaust gas analyser stick the sniffer in the radiator just above the water when it is hot. If it picks up exhaust gases you have a blown head gasket.
Any number of things could cause a Yamaha Raptor 660 not to start including a blockage in the fuel hose. There could also be a problem with the carburetor.
Yes, a restricted or leaking radiator can cause the engine to overheat.
broken engine gasket.
Yes, if the radiator is clogged and the engine overheats. The main cause of head gasket failure is the engine overheating.
Yes, if the radiator fan is not working, it can cause overheating of the engine. The radiator fan helps to cool down the engine by pulling air through the radiator to remove heat. Without the fan, the engine may not receive adequate cooling, leading to overheating.
probably
Having a leak in a radiator hose will have no effect on the engine running or not. However, in time the hose leak will cause the level of the coolant in the radiator to drop below a critical level and the engine will overheat.
clogged radiator or bad water pump
No, but it can cause severe engine damage if you keep running the engine.
no oil in engine or water in radiator will cause engine to seriously o/heat! and eventually seize! major engine damage!!
Cooling system leak or engine overheating and steam escaping from the radiator cap.Cooling system leak or engine overheating and steam escaping from the radiator cap.
A cracked radiator would leak the fluid out, leaving no coolant for your engine which would cause your engine to overheat and be destroyed pretty quickly. So the answer is NO.