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Post by t4vanman on May 21, 2011 19:06:00 GMT 1
Hi all, i have a 350 f2 which for some strange reason ejects it's coolant out of the expansion bottle, this does not happen every time i ride it, for instance did 130 miles in a morning with no problems but again today i rode 8 miles and bingo it's done it again, i would appreciate any idea's as to what is going on i'm sure someone can help please. Attachments:
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Post by mellow on May 21, 2011 19:55:38 GMT 1
nice bike m8  ur cans are nearly as shiney as mine,nice to see im not the only one who does it ;D Im pretty sure if its pressurising the coolant its head gasket  not sure why its intermittant though  |
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Post by t4vanman on May 21, 2011 21:26:48 GMT 1
Hi,
thanks for replying , my local garage says the same thing , damned strange it runs perfectly and does not overheat,
cheers.
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Post by flames on May 22, 2011 9:17:55 GMT 1
a mates mtx 125 did this.only ejected water when he hit the powerband.maybe this could explain why it is intermittent? if the head gasket is leaking a bit,or you have a slight crack in the head,it will only eject higher up the revs when it builds up enough pressure?
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Post by nikfubar on May 22, 2011 9:48:10 GMT 1
Try re-torqueing the head before you pull the engine apart, had this happen to mine & it cured it.
I also gave mine a couple of Lbs extra but some say you shouldn't do this. One other thing to look at is the filler cap & the plastic ridge it seals against, make sure there is no damage to the lip & the rubber seal is good on the cap. These caps are only set at 0.9 bar so it doesn't take much to get blow past, most caps of this type are 1.1 bar which is what I'm using at the moment.
BTW if you do happen to have a faulty cap I have several spares if you need one.
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Post by t4vanman on May 22, 2011 17:22:08 GMT 1
Thanks for the response,
my mate who is a bike mechanic has already torqued the head down by another 4 lbs, he said the same , he did'nt want to pull the engine apart for no reason and he also fitted another filler cap this one is 1.1 bar from a tdm 900 !
And yes it only seems to spurt if i'm giving it some beans but i don't ride hard all the time as i'm on my last rebore so i will be looking for some good second hand barrels at some point. i hear 31k barrels are good bet?
thanks all, i think my suspicions are correct , it's time to pull it apart ( again) !!!
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ur cans are nearly as shiney as mine,nice to see im not the only one who does it ;D
not sure why its intermittant though 
