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Oil leaking from exhaust slip joint

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londonsean69 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote londonsean69 Quote  Post ReplyReply Direct Link To This Post Topic: Oil leaking from exhaust slip joint
    Posted: 14 Oct 2017 at 15:27
Afternoon all

I have, until now, been fortunate with the Tuono, in that the only issues have been of my own causing (crashing).

This has changed, yesterday evening I went to pop some air into the tyres to ready it for a ride this morning, and noticed a telltale small puddle of oil on the floor under the bike. I started it up, and sure enough, there was a small drip, and a coolant leak, so switched it off and decided I would use the wife's missile (GSXr-1000) to go out on.

So, took off the belly pan and gave everything a damn good clean, then fired her up.

The coolant is coming from a pinhole leak on one of the radiator hose - not the end of the world as I'll replace the entire set with silicone hoses. I need to replace the radiator anyway as it's bashed in following a crash a few years back.

The oil leak is a bit more worrying, coming from the slip joint between the front header pipe and the central manifold. The actual drip is coming out from inside the pipe and flowing along the slip joint, it is not running down the outside of the pipe from elsewhere.
There is some very light blue smoke from the exhausts. I did try to run it for a while to see if it would burn off, but the engine was at 110c and rising, so shut it off (assume the coolant is low, well, hoping, more than assuming).

The oil is definitely not overfilled, as the bike has been ridden several times since it was serviced.
Last time out on it was a decent length run in June, there were no apparent issues then.

My first port of call is going to be to replace the hoses (and all of the coolant, naturally enough.
I'm then going to change the oil to make sure it's not milky.

Any thoughts/ideas, as at the moment I'm simply praying it's not the head gasket. As it stands I can't ride it to check if it's down on power and I don't yet have a compression tester.

2008 Gen 2, about 28,000 miles, last major service showed all valve clearances to be well within limits.

Thanks in advance

Sean
Cheers

Sean

A few of my pics - www.arrowpix.com
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426hemi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 14 Oct 2017 at 16:07
The slipper clutches on these work off a rubber diaphragm in the right hand case and uses vacuum from the throttle body, if this is split it could draw oil from the clutch into the throttle body?
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londonsean69 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote londonsean69 Quote  Post ReplyReply Direct Link To This Post Posted: 14 Oct 2017 at 17:20
Originally posted by 426hemi 426hemi wrote:

The slipper clutches on these work off a rubber diaphragm in the right-hand case and uses vacuum from the throttle body, if this is split it could draw oil from the clutch into the throttle body?


Thanks for the quick reply

That sounds reasonably promising, and not quite as severe as the head gasket.
I am assuming that the amount of oil being drawn in means it isn't all being burnt off, hence the accumulation in the exhaust?

Is it reasonably easy to check? I'm OK with the spanners, about the only thing I won't do is anything that involves adjusting valves and timing!
Cheers

Sean

A few of my pics - www.arrowpix.com
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426hemi View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote 426hemi Quote  Post ReplyReply Direct Link To This Post Posted: 14 Oct 2017 at 17:25
When you shut the throttle vacuum from the tb's is used for the slipper clutch. Right hand side casing, about 10 small Allen bolts and gently lift the cover off as the diaphragm is also the gasket, if its split you'll see straight away, about a 20 min job to check.
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londonsean69 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote londonsean69 Quote  Post ReplyReply Direct Link To This Post Posted: 14 Oct 2017 at 17:28
Originally posted by 426hemi 426hemi wrote:

Right hand side casing, about 10 small Allen bolts and gently lift the cover off as the diaphragm is also the gasket, if its split you'll see straight away, about a 20 min job to check.


You Sir, are a gent.

Cheers

Sean

A few of my pics - www.arrowpix.com
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bladebod View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bladebod Quote  Post ReplyReply Direct Link To This Post Posted: 17 Oct 2017 at 11:46
let us know how you get on...
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