I just got my first bike two weeks ago. It started out fine driving it back up to Kent from North Canton. Then I left a buddys house to take it home and I stopped at a stop sign and herd splashing. Looked down and I was spraying coolant all over the street... I looked and found a small hole in the hose going from my water pump to the bottom of the radiator. Fixed that then had overheating issues. I realized I had coolant coming out of my radiator cap. I replaced the cap, drained the coolant and refilled it, and just for measures checked the oil... NO OIL. I put two quarts in and everything seemed fine. Till the next day... THen overheating again and that same hose was leaking. So I took the hose off and found this yellowish gunk. I drained the oil and filled it back up and now I have no problems with it. Except in traffic if I sit too long it starts to overheat and again I have coolant coming out of the radiator cap. Any Idea?

 

I think your radiator fan is not working.

https://cbrforum.com/forum/stickies-...ng-fan-122988/

 

That was my first concern. But when it was overheating last night i pulled into a parking lot and turned the bike off and I herd my fan running. I will check the way you suggested just to be sure its what Im hearing.

 

You have air in cooling system and it has to be "burped" out. To Bleed the cooling system of all air do as follows...

Fill the system with the recommended coolant
through the filler opening up to filler neck .

Remove the radiator reserve tank cap and fill the
reserve tank to the upper level line .
Bleed air from the system as follow :
1 . Shift the transmission into neutral . Start the
engine and let it idle for 2-3 minutes .
2 . Snap the throttle 3-4 times to bleed air from the
system .
3. Stop the engine and add coolant up to the proper
level if necessary . Reinstall the radiator cap .
4. Check the level of coolant in the reserve tank and
fill to the upper level if it is low .
Taken right from the service manual. I've also heard about carefully rocking the bike from side to side while its running will also help displace air too.
Hope this helps!

 

I will have to try that as well. Tomorrow is supposed to be nice.

 

Double check (or just replace) the thermostat, as well. they are relatively cheap and if it
is frozen, either shut or half-open, it will restrict coolant flow through the block.

I would also, consider a complete flush of the system. Drain it completely and hook
a garden hose to the bike and back-flush till it runs clear. if you get a 't' fitting and a
spare piece of radiator hose, you can hook the hose in-line to do the job. Most auto
stores sell something similar as part of a flush kit for cars.

Then, refill and monitor both the coolant and oil. You may have a blown gasket
internally. The oil and coolant combining, might be the source of your "goo".

Good luck, Ern

 

Looks like I have a lot to do tomorrow. I have herd that the "goo" could be because of a blown gasket. I was hoping it was just something a lot easier to fix. After checking the fan, installing a new thermostat, flushing the system, and burping it, I will have to look into that if I still have a problem. Thanks for all the help guys. If anyone else has any idea or you guys think of any more please let me know.