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April 5th, 2011, 02:19 PM   #1
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2010 FS570 coolant in radiator boiling over.

yesterday i was riding to work and all of a sudden alot of steam came up from the head, the radiator overflow tube was dropping coolant all over the head.

in the 6 months (summer) i have owned the bike this has never happened before.

when i got the bike home i waited until she had completely cooled down, then proceeded to inspect the coolant.

i removed the radiator cap and inspected the coolant it sat just above the core (normal) i then started the bike with the cap off and immediately coolant rose way over the top of the core and was forced out of the radiator filler.

the is not right the coolant should just sit at the normal lever until she really heats - after riding for some time.

what would be causing this abnormal pressure to force all the coolant out the radiator cap filler hole.

so with the radiator cap back on this symptom which occurs immediately when the the bike starts is forcing the coolant out of the overflow tube.

(i know alot of people talk about fitting the fan but i have had no need to yet and i have been commuting on the bike all summer) and in this case this is clearly not the issue.

can anyone shed any light on what is causing this problem?

cheers.
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April 6th, 2011, 07:23 PM   #2
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Re: 2010 FS570 coolant in radiator boiling over.

sorry to hear your plight. My instincts say head gasket but thats just a guess. Keep us updated.
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February 2nd, 2012, 03:16 PM   #3
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Re: 2010 FS570 coolant in radiator boiling over.

Hi synesthesia570,

Have you fixed the problem?
Beacuse it is happening to me as well.
Exactly the same.

It happened to me just after I installed the Evans coolant.
Before the evans, non a single drop came out of the overfill hole, only when the coolant boiled.

But now, with the Evans, just after the engine is started, totally cold I can see liquid coming out of that hole.
I have tried with lower level of coolant, higher level, with or without radiator cap, and I can see that the coolant level is getting higher with a lot of small bubbles, and everytime I rev the engine up sudently the coolant wants to scape from the radiator.

Has anyone any idea?
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February 2nd, 2012, 03:48 PM   #4
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Re: 2010 FS570 coolant in radiator boiling over.

Has the 70 engine a bleed screw?
How can I bleed the coolant circuit?

Those really small bubbles can indicate a head gasket problem?
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February 2nd, 2012, 03:50 PM   #5
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Re: 2010 FS570 coolant in radiator boiling over.

hey dude, I have been down this road with my 09. I had a leaky head gasket and then water pump seals installed back to front from the factory. Sounds like your head gasket, you need a copper gasket.
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February 2nd, 2012, 11:42 PM   #6
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Re: 2010 FS570 coolant in radiator boiling over.

Head gasket...?

What a hell...!

How come with only 2000 kms the head gasket can be damage???

How much does it cost?
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February 3rd, 2012, 02:33 AM   #7
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Re: 2010 FS570 coolant in radiator boiling over.

Sorry to hear that dude, I feel your pain. The factory multi layered steel head gaskets are rubbish. I had problems with mine @71 hours and opted for a copper unit from Valley Force Husaberg in Victoria, Australia. User gazza on here runs a fleet of rally bergs and has seen ten or more fail between the laminate, mine allowed chamber pressures to escape directly into the coolant passage.

SCE in the states make a copper gasket as well. The aussie gasket cost me $52 AUD
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February 3rd, 2012, 03:44 AM   #8
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Re: 2010 FS570 coolant in radiator boiling over.

Thanks berglsmerg,

Do you know if it is really complicated to change that gasket? I mean, do I need any special tool or anything?

Mine has only 60 hours and 2000kms. Can be covered by the guarranty?

The symptom of havin a damage head gasket is without the radiator cap to see a lot of small bubbles on the coolant?
Can be as well smelling a bit of oil the same problem?

What can be the reason of damaging a head gasket?
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February 3rd, 2012, 02:50 PM   #9
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Re: 2010 FS570 coolant in radiator boiling over.

no special tools are required and its not too complicated, if you are competent enough to change piston rings then a head gasket is no trouble.

The gaskets fail between the laminated surfaces of the gasket, they are just a poor design.
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February 4th, 2012, 02:22 PM   #10
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Re: 2010 FS570 coolant in radiator boiling over.

Thanks.

Can the bubles on the coolant be for any other reason? because the bike runs like new. Has the same power as new. Stars at the first attemp always, perfect idle....!
Can I make any other check to know if it is the head gasket?

If the head gasket is the real problem, can any damage happen to the engine if I go for a ride?

What can be the reason of damaging a head gasket?

Cheers.
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