05-02-18, 04:04 PM
If the coolant levels are still both full you can rule out a leak
The fan should come on before the red light but hardly ever comes on except for idling in traffic on a hot day.
Idling although headers might get hot the engine isn't producing nearly as much heat as it does when it is producing power so it can be confusing.
Brown mixture could be chain lube etc from the front sprocket cover or from anywhere under the bike if it went in garage wet.
The thermostat should start opening somewhere around 85 degrees, if you don't have a thermometer it is too hot to put finger in water but before it is boiling, when it's near boiling the thermostat should be fully open.
There should be no noise from the water pump and hard to tell if it's working but if you run the engine with the radiator cap off you should be able to see the water moving once it has warmed up enough for the thermostat to start opening. As the bike is warming up check how hot the two sides of the radiator are once the engine has warmed up the sides of the cylinder head and the two sides of the radiator should all be much the same temperature. if the cylinder head is getting too hot to hold your hand against but the radiator still cold it's not a good sign.
The fan should come on before the red light but hardly ever comes on except for idling in traffic on a hot day.
Idling although headers might get hot the engine isn't producing nearly as much heat as it does when it is producing power so it can be confusing.
Brown mixture could be chain lube etc from the front sprocket cover or from anywhere under the bike if it went in garage wet.
The thermostat should start opening somewhere around 85 degrees, if you don't have a thermometer it is too hot to put finger in water but before it is boiling, when it's near boiling the thermostat should be fully open.
There should be no noise from the water pump and hard to tell if it's working but if you run the engine with the radiator cap off you should be able to see the water moving once it has warmed up enough for the thermostat to start opening. As the bike is warming up check how hot the two sides of the radiator are once the engine has warmed up the sides of the cylinder head and the two sides of the radiator should all be much the same temperature. if the cylinder head is getting too hot to hold your hand against but the radiator still cold it's not a good sign.