Coolant Hoses

Got back from a ride yesterday and I found that some of the radiator hoses had sort of collapsed - almost like they were being sucked in.

Guy I was with said the rad cap is the problem since it is meant to let air in to compensate for the contraction of the coolant system as it cooled.

Was he right or anybody know what to look for ? Coolant level is good (it did spit a bit out the overflow bottle on a steep climb but it wasn't a lot).

Cheers

Bad cap seems to make sense, as the rads should be able to pull coolant back in from the burp tank on cool down. Should be easy to check with another cap. Could your line from the rad to the tank be plugged or kinked? Maybe even have a cap on the burp tank that's not venting like it should? I don't know if your setup is the same as my 08 so .........

Might as well buy a 1.8 cap while your at it. The huskys come with low pressure caps like 1.1 scott summers and many others just replace the cap with the high psi 1.8 cap and it prevents boil over from happening.

I need to get this done soon, Ive heard that kx60 caps work.

KX60 as in a Kawasaki ? If not, where else can I get a 1.8 I wonder

You might want try a Kawasaki part# 49085-1077 1.8 rad cap.
I just ordered one for my 08 TXC450.

Thanks, ordered one today