My sons cbr 1000 came back from a ride on very cold day about -1 and the temp was 108 and the radiator fans were on.He got the bike last week,if the coolant was too strong would that affect it looks almost neat.
Cbr 1000 overheating
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Sounds like a fresh bike with faults,it could be 100% water coolant freezing in the radiator or the thermostat could be seized shut or an air lock in the system.
It needs sorting before the next ride out.
What year / mileage/service history are you talking?
CBR1000's and later Blackbird's do tend to run hot in Traffic and slow riding conditions but this sounds like the bike has a problem. I would first drain and replace the coolant with the reccomended mix then check for leaks and possible Blockages, then take it for a run and if it still runs hot Take it back to the seller. Good Bikes otherwise, if properly maintained.
Thanks for reply jaffa and snev the bikes a 1000 r 05 reg 17000 miles a track bike with day mot.Iv'e squeezed the hoses for trapped air ok.I'll check the stat and look at the plugs maybe running lean but i don't think it's that,it as a dynojet on it.