Overheating

Hey guys please I need your advice.

I’m facing an overheating challenge with my 2008 cb1000r.
I noticed it three weeks ago but it’s cool on the open road and overheat in traffic or on a slow cruise.

Fan and temperature sensor are perfectly fine
I have washed the radiator
Replaced the blown water host
Add seal on the radiator cap
Flushed the coolant and running with ordinary water
Current temperature is Sierra Leone is 29 degrees.
still facing overheating.

we actually do not have professional and good Mechanics in Sierra Leone.
I’m suspecting the cylinder head gasket but I don’t want purchase and open the engine and still face same thing after.

so please I need your advice.
I really love that bike and want to get back on the road.

BigOne-94-14 said:

I was sitting at traffic lights this afternoon and noticed that my CB's temp had reached 220f. Now I know that the fan should cut in a little higher than boiling, and 220f is 104C, so not too bad ... maybe.

When I got home I let the bike sit on idle for 5 minutes. The temp climbed to 234f, 112C which is starting to sound kinda high to me. I read elsewhere that the fan should cut in round 103C.

It sounded to me like the fan was running. According to Weather.com the temp was 80f here at the time, though in full sun it feels more like 95.

So to my question - is my bike about to explode when the temperature in the shade hits 95 on Sunday?

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tbutera2112 said:

I forget what temp my fan kicks on... But it's fairly high just like yours... It gets so hot here that my bike runs hotter while riding because the air outside is so hot over radiator... I've seen 220s-230s while riding on the freeway here

Is your fan not kicking on still at 234? I've ridden in 115* and never had overheating problems, but it did run hot

I'd offer to take it for a spin and let you know, but it's torn apart for powdercoating right now

I think these bikes just run hot... But I've never had issues... It got up to 119 last summer here

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