SV650.org - SV650 & Gladius 650 Forum - View Single Post - Reasons for coolant to leak from breather hose?

15-04-11, 09:47 AM

Providing the pressure cap is opening when hot and there are no leaks between the rad and header the radiator should be full unless it has blown excessive amounts of coolant out. This,as Chris says would probably be caused by in ingress of air through a water jacket or blown head gasket and by the symptoms described it is not this.Not trying to teach but you are using a 50/50 coolant mix.
Easy test for the rad cap is to put it in a bowl/pan of boiling water and see that it opens which it should do with 100 degrees C.
Fan kicking in and rad opening are two different temperatures.
In all honesty Diz PROVIDING YOU HAVE WATER IN THE HEADER it is nothing to worry about as I find level markings are not always accurate

15-04-11, 09:47 AM	#23
Dicky Ticker Guest Posts: n/a	Re: Reasons for coolant to leak from breather hose? Providing the pressure cap is opening when hot and there are no leaks between the rad and header the radiator should be full unless it has blown excessive amounts of coolant out. This,as Chris says would probably be caused by in ingress of air through a water jacket or blown head gasket and by the symptoms described it is not this.Not trying to teach but you are using a 50/50 coolant mix. Easy test for the rad cap is to put it in a bowl/pan of boiling water and see that it opens which it should do with 100 degrees C. Fan kicking in and rad opening are two different temperatures. In all honesty Diz PROVIDING YOU HAVE WATER IN THE HEADER it is nothing to worry about as I find level markings are not always accurate