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Old 10 October 2009, 05:04 PM
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crf450r
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Default smoke after sprint day

just been to curborough on a members track day,, had a great time apart from noticing a plume of smoke on start up after it had stood for 10 to 15 mins as we left,, ive never seen any smoke from it before just a bit worried ive hurt my baby lol
is it anything to woory about
Old 10 October 2009, 05:09 PM
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every1sgottablue1
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Maybe a turbo bearing letting a bit of oil in to the zorst mate but I am no expert.
Old 10 October 2009, 06:43 PM
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x2 to what every1sgottablue1 said
Old 10 October 2009, 06:47 PM
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what does that mean though is the turbo on its way out??
didnt see any smoke on the way home could it just be a one off
Old 10 October 2009, 06:50 PM
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prob the seals are letting go but hard to tell not seeing the car is it not smoking now?
Old 10 October 2009, 07:02 PM
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What colour smoke?

White?
Blue?
Black?

If it's blue then possible oil seal on turbo, valve stem seals or piston rings.

Not only is the colour vital information, but also when it does it and if it is still doing it.

Hard to tell without more information tbh.
Old 10 October 2009, 07:15 PM
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i would say it was whiteish colour it didnt smoke on the way home about 30 mins steady driving!
have checked oil level doesnt look like its used any oil at all.
also revved the car when we got back home with no signs of smoke at all
the exhaust does look sooty around the tailpipe

Last edited by crf450r; 10 October 2009 at 07:19 PM.
Old 10 October 2009, 07:19 PM
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Well... if it's white, it is either condensation in the exhaust (quite normal), or your headgaskets have popped.
Old 10 October 2009, 07:31 PM
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how can i tell if the head gaskets have popped??
it runs perfect i cant see it being condensation as the car was still warm and it was about 16 degrees outside
Old 10 October 2009, 07:37 PM
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Check your water levels.
Old 10 October 2009, 08:56 PM
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water levels are the same as when i left this morning so not used any water yet
have just started it again from cold it started fine then after afew seconds there was the puff of white smoke again then nothing
Old 10 October 2009, 09:21 PM
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Roger.m.
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whats black smoke then ?
Old 10 October 2009, 09:42 PM
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Originally Posted by Roger.m.
whats black smoke then ?
fuel.
Old 10 October 2009, 10:09 PM
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thought it was thats why im in petrol station every day lol.
Old 11 October 2009, 08:49 AM
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seems like the worst it could be is the head gasket
how much is this likely to cost???
Old 11 October 2009, 10:45 AM
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crf450r,
From what you have suggested it is just condensation. DON'T WORRY! If it was your HG's gone, you would be losing water, having temperature issues, blowing water out of your header tank overflow. If your water level does not go down, you have no temperature issues or water is not being pushed out of the header tank overflow.... you are fine!

HG's are going to be any where between £700-£1000, to do properly.
Old 11 October 2009, 12:39 PM
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shaun
thanks for you info,,
i started the car this morning no smoke at all just condensation,however the water level was down about an inch, should i just use the car through the week and keep an eye on things or am i going to make it worse running it
Old 11 October 2009, 02:51 PM
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OK.... if the water is down an inch to what it normally is, it must be going somewhere.

I would suggest you get it checked by a reputable Subaru Specialist as soon as you can. *IF* it is the headgaskets that have caused the coolant loss (which needs to be investigated), continuing to drive the car and causing temperature issues could eventually cause more problems. Drive off boost to a specialist and have it looked at..... if only for your piece of mind. Keep positive as it could be something else.

Good luck!
Old 11 October 2009, 04:38 PM
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shaun,,
bit of an update went for a little drive about 20 mins off boost no smoke.
before i went i topped water up to see if it drops on the full mark got back left it for 15 mins started it and again same white smoke for a few seconds. but the strange thing is the water level is now an inch ABOVE the full mark, what do you think??
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