The Mystery of the Disappearing Coolant

SpudRider · 08-23-2015, 04:55 PM

I keep refilling the coolant overflow bottle on my RX3, but it never stays full. How is the coolant disappearing?

All motorcycle engines with water cooling have an small hole near the water pump which will ooze coolant if the water seal fails. I have repeatedly examined this inspection hole on the RX3 water pump, and it is not leaking coolant. Therefore, I must believe the water seal is in good condition.

I have also checked all the hoses and connections between the engine and the radiators. I have not discovered any leaks.

How is the coolant disappearing? I certainly think any air voids in the coolant system should have been filled by now. I have recorded over 8,000 miles on the odometer of my RX3 motorcycle.

08-23-2015, 04:55 PM	#1
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	The Mystery of the Disappearing Coolant I keep refilling the coolant overflow bottle on my RX3, but it never stays full. How is the coolant disappearing? All motorcycle engines with water cooling have an small hole near the water pump which will ooze coolant if the water seal fails. I have repeatedly examined this inspection hole on the RX3 water pump, and it is not leaking coolant. Therefore, I must believe the water seal is in good condition. I have also checked all the hoses and connections between the engine and the radiators. I have not discovered any leaks. How is the coolant disappearing? I certainly think any air voids in the coolant system should have been filled by now. I have recorded over 8,000 miles on the odometer of my RX3 motorcycle. __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
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