Hi all !
Need some help.. 2003 DL1000
Rode my bike today for about 70 miles... when I stopped, a friend saw coolant that was going out from the overflow hose .. I checked the temperature of the bike and it was 3 bars..
A guy told me it may have happened cause I really pushed the bike to more speed than the usual and maybe it overheated, he told me to let it cool and it should be alright.. so I did..
When I checked the bike like after 40 minutes, the reservoir tank was empty, so I removed the radiator cap to check if it was filled, and it was.. I was able to see the coolant at the top..
Started the bike again and added a bit of water into the reservoir tank, all good.. starting riding, after 20 miles we did a stop in a gas station, the temperature was 2 bars as always.. I saw the water in the reservoir tank and it was as I left it.. but, around 1 minute after I stopped, I saw a lot of bubbles coming from the bottom of the reserv tank, and I saw the hose that comes from the water pump like "Squezed" (I circled the hose in red in the pic attached for ilustration) .. the hose was like if it was trying to suctioning water and found an obstruction or something.. and it was cold .... then the bubbles were big like if the water was boiling... the water was too hot and the reservoir tank was empty..
One of the guys told me he thinks it's a bad thermostat.. he says he thinks it's not opening, and that's why the hose gets like that, because no water is passing from the radiator to the water pump.. the water pump seems to be working because it makes the hose like that...
when we open the radiator cap, I heard a "clap" and the hose shape was again as normal... the hose which was cold before, was now hot after the "clap" sound..
I highlighted in green what I think it's the thermostat..
So, does it make sense to you what we are thinking? could it be a bad thermostat?
ANy ideas are welcome !!