A couple weeks ago I went mudding and got the rad caked with clay…I attempted to clean it out while on the trail, but if you’ve ever had this happen to you, you know how hard that is…Anyhow, HI temp light came on, limp home mode shows up…I drive the bike home slowly, 30kmph max..long story short the coolant must have boiled out of the overflow and when I went to use it the next time, HI temp light came back on after just 3km. I cracked the rad cap and the rad was completely dry. I put about a litre of water in there that I had from a water bottle and it barely made a dent…So I "limped back home". I don’t really understand how the bike lets you drive home in "limp home mode" if the rad is completely boiling out its fluid. In 20/20 hindsight I do faintly remember a rad fluid smell…
I filled up the rad, bleeded the system and still nothing.
Now. The bike is cold. Rad fluid is full and both bleeder screws seem to have steady stream of coolant. When I start the bike it takes a few mins for the fan to come on, but it does, and with the rad cap off I can see the fluid flowing up and down, up and down as if it was circulating, So im HOPING its not the waterpump by the sounds of it. The coolant gets so hot that its boiling in the engine, just at Idle, I haven’t been riding it since the overheating issue.
The top rad hose gets hot, the bottom is cold. The rad looks clean and I can shine a light through it as well.
So first question..The flow of coolant goes from the bottom rad hose to the water pump, correct? This would be why the bottom hose is cold…It runs up to the rear cylinder, gets hot…front cylinder, then back to the rad.
Does this sound like a thermostat issue or waterpump issue (assuming the flow of coolant is the other way around TOP to Bottom)…I’m just a bit puzzled and I’ve read everyone else’s thread but they dont seem to mention flow of coolant as well as bottom rad hose being cold.:th_smiliepullhair:
Thanks in advanced for any advice!
