Posted April 17, 2002 - 05:31 AM
Posted April 17, 2002 - 06:11 AM
Does it do this if you just start it and let it run for a few minutes? Or is it after a long ride?
If it is overheating then when the bike cools it should suck the fluid back into the radiator. After all, thats what the resivor is for.
Posted April 17, 2002 - 09:19 PM
The coolant is forced OUT by pressure/expansion. This is why I doubt you have a radiator or engine leak: you would be smoking (white) or seeing coolant in your oil or see coolant hissing out.
To return upon cool-down, however, relies upon vacuum. A slight seal leak at the cap or nipple could be "stealing" the vacuum. It probably isn't big enough to cause much leakage when the coolant is expanding. Sometimes caps just go bad and the pressure relief spring doesn't work properly both ways. Just my best guess, but I'd try a different cap. Worth a shot?
Almost forgot! Make SURE you have a vacuum tight tank hose INSIDE the reservoir that stays submerged below the coolant level. I have never looked inside the WR's tank to see if it uses a hose or a molded tube, But it MUST be below the level and airtight or this will cause the same problem: sucking air back into the radiator upon cool-down instead of coolant.
[ April 17, 2002: Message edited by: Chaindrive ]
Posted April 17, 2002 - 04:05 PM
Chaindrive, thanks for your solutions I will try to search for any vacuum leak.