Cooling System Explained

[jlyall]

If you were missing that cap that would spell big trouble. A depressurised cooling system, you would have had the cooling system pissing out eveywhere and no coolant in the engine jackets which means the fan would have been on pretty much everytime you start the bike and yo might have cooked your engine.

Are you 100% positive that the cap isn't there?

Remove fairings and tank and check the bike thoroughly. It has to be there if your bike is an MC14, MC17 or MC19.

That cap if it's the same as the MC22 plumbs into the cooling system straight into the rad, but also attaches next the pipe end of the cooling system once the coolant has completed a full circumnavigation of the rad, then engine jackets then enters back into the rad. There is also an overflow pipe there as wellI think.

If that doesn't make sense, which it probably doesn't see page 104 or section 5 of the manual.

Manual is available on here.

[grifferello]

Hi Jlyall,
I'm positive it isn't there as i've just done the head gasket and took the engine out to do so. I bought a cap/thermostat unit today and waiting for delivery. It has 5 outlets on it plus a sensor nipple. Outlet on the neck is the overflow you mentioned going back to the bottom of the expansion bottle under the seat. The largest outlet i presume goes to the top of the rad and I've no idea where the other 2 go. The last owner did some botch job on it. The nunce!!!! Still, I appreciate the help. I'm slowly getting there though. Thanks again.

[jlyall]

Can't help you there as I don't have the same bike, but I know that one pipe should go to the engine jackets and one other to the rad as well as the small overflow to the expansion bottle.

Check the manual mate.
http://cbr250.com/forum/thread-425-post-...l#pid53663

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Also pics of the botch job? I'm curious.