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Getting too hot!

C

cassova

Joined Jun 2009
5 Posts | 0+
Riding my bike back from work today into Brussels and the temperature outside is a nice 27-28. Sure the traffic in town was bad but the bike only peaked at around 93-94. I pull away from a stop light and my back end kicks out horribly! I recover and pull over to check out whats on my tire. I turn off the bike and it's steaming!

I see a trail of water (or something) from my bike down the road and I can hear what sounds like boiling in my radiator. The liquid is dripping pretty heavily from my steaming bike; enough so to coat the back tire. The liquid is clear and slippery but no smell. I'm guessing radiator fluid (coolant).

Now I've heard the boiling noise before at around these same temperatures, but never seen this much liquid shooting out of my bike!! I'm thinking the boiling was causing the overflow to shoot out of my bike but I'm not sure. I didn't think my coolant should be boiling at this temperature!? Do I just need to flush the coolant? Also, does regular car coolant go in these things or do we have to put some special RSV brand coolant?
 
Like the previous reply, check the fans are kicking in at about 94 or so. was 94 the highest temp you noticed? It was probably coming from the overflow pressure cap, cos it got too hot. Fill with coolant (or water for test only), I'm not sure if there is a bleeding procedure, I'm sure someone can enloghten you, run the engine stationary and check the fans come on at or about 94. If they dont and water spews out again, then the fan or temp sender will be faulty
 
My fans kick in at 88 celcius (Not sure if that is normal for early models), it sounds like you might have an airlock from an earlier problem.

I would NOT ride it until you've got it sorted as you cold blow the head gaskets.

Yes there is a correct bleeding process, I am not too sure but you could do worse than contact Griff from here for advice.
 
mine got to 105deg in a que in york other day! and fans didn't kick in!:eek:

better get mine checked too

it goes down to a nice steady 76deg once i got going again tho
 
Bleeding is done by refilling with the bike on the sidestand and filling slowly and pressing the hoses to get all trapped air out.............................well thats what i did and it worked.
 
Well i found my problem. thermal switch fooked basiaclly its open cct even when bike is at 105deg!

so now i've wired in a temp switch to manually turn fans on!

Its a picture hook wrapped in electrical tape stuck in the common neutral, to start fans just simply plug in the live to the hook hey presto Fans on:thumbup

Need a new thermal switch, Anyone know how much they are roughly?

I know for my old suzuki about £10 so for RSv i'm thinking £9999.99 possibly
 
Nicely done. I'm taking mine in today to get it looked at. If its the same, I'll let you know how much.
 
There was a lad on the iom, he had just pulled up after doing the mountain, and i was chatting away, then his cooling system exploded and covered us both in boiling hot coolant.

I asked him if his fans were working and he said he didnt know as he had only just got the bike, his temperture guage was showing 99 degree's.

We tried to inspect the cooling system, but his bike had crash bungs fitted through the side panels of the fairing and we couldn't get them off to see, and no one had the correct tools to get them off either.

So now i always make sure that if my bikes fans are on, or the temperture is near to 94 degree's, then i will leave mine running till the fans kick in and get the temperture back down to 88, same as turbo cars basically, as i don't want my cooling system to explode.

Also to note is the fans go off when the engine is switched off, so you could end up with a hot spot if you switch off before the cooling system has had time to completely cool down.
 
I just replaced mine, it was about 26 quid or so. ***** to get off though, its a 29mm socket. Good luck finding one.
 
Just got back from the shop. It was the temperature sensor. Sensor cost 65 euro. Walked out of the shop with fixed bike and 135 euro hole in my pocket.
 
mine are in at 80 ish not sure of ex temp will check tomo if its hot i use the kill switch so the fans keep going for a bit
 
all you do is cool the water in the radiator, as without the engine running, then the waterpump wont be turning, hence you will still get hot spots.

Thats why tuned turbo cars have a timer built into them so the oil can still circulate the bearings with the engine running.
 
so letting the engine idle for a while does what exactly its still hot , if its at 83 c when running it will still be at 80ish c at idle , turbo engine like to idle to let the rotors slow down so when you do turn off they arent spinning flat out without oil going through the bearings . i know the water isnt circlating so maybe i wont do that either .as long as you havnt come screaming to a halt from flat out then switch off all should be ok
 
he had been flat out, he had just done the mountain section on the isle of man, and pulled in at the bottom of the hill. his temp was at 102.

my fans cut in at 95, and go off at 87, which is alot better temperture to leave the bike at, and if it means i wait a 30 seconds before switching off, then so be, damn sight easier than sorting head gaskets etc out afterwards, and by the state of the engines on fleabay, this engine does seem to suffer from quite a few head gasket probs.

Either way, it's your bike and your choice.
 
cassova said:
Riding my bike back from work today into Brussels and the temperature outside is a nice 27-28. Sure the traffic in town was bad but the bike only peaked at around 93-94. I pull away from a stop light and my back end kicks out horribly! I recover and pull over to check out whats on my tire. I turn off the bike and it's steaming!

I see a trail of water (or something) from my bike down the road and I can hear what sounds like boiling in my radiator. The liquid is dripping pretty heavily from my steaming bike; enough so to coat the back tire. The liquid is clear and slippery but no smell. I'm guessing radiator fluid (coolant).

Now I've heard the boiling noise before at around these same temperatures, but never seen this much liquid shooting out of my bike!! I'm thinking the boiling was causing the overflow to shoot out of my bike but I'm not sure. I didn't think my coolant should be boiling at this temperature!? Do I just need to flush the coolant? Also, does regular car coolant go in these things or do we have to put some special RSV brand coolant?
Click to expand...

i was on about this one :dunno
 
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