do i need a new top end gasket

[leechy]

hi all im new to this forum was wondering wether any 1 can help have recently bought myself a cagiva mito 125 evo2 2000 v reg and have noticed a creamy coloured fluid in the exhuast exit and was woundering wether this is caused by radiator fluid geting in to the piston chamber any help would be much appriceated

[Spudly]

Have a look at the oil, if it's a gray or creamy coloured, I'm afraid your head gasket is buggered. It will be running like a dog as well.

If the oil hasn't changed colours, you may find it's blowing white smoke from the exhaust, which is an early indication.
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The Old Apprentice

[serlant]

wow wow hold on there. where abouts are we talking exhaust exit? end of the exhaust pipe? theres plenty of chances for water to get into the exhaust every time it rains so don't go jumping the gun, remove the radiator cap (not while boiling hot ) and start the bike, make sure you can see no bubbling in the radiator, rev the engine and if still no bubbling replace radiator cap and just ride it and keep an eye on the coolant to be sure it isn't using any.
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04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)

[leechy]

it is blowing white smoke and the oil is black when the bike has just started but when it starts geting up to temp and has been reved up the exit gets thic with creamy looking fluid so it has gone then was just makeing sure so i dont go spending money on summit i dnt need and or cause more damage to the engine

[DMCpro]

white smoke is an indication of oil burning, being a two stroke i'd say this is normal.
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Honda CB-1, TS125X
VW Golf Estate

[serlant]

i'd say its normal, probably just unburnt 2 stroke oil mixing with water/condensation.
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04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)

[Matt-]

Sound's fine just leave it until it get's worse.


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RIP jack (wheelie king), you will never be forgotten.
Current Bike's - Road Legal TZR 125 Pitbike, Aprilia SR50R 2010

[MaybeGuy]

keep an eye on your coolant level. Sealed radiator, so just the coolant bottle.

Then again, the head gasket is just 2 o-rings, so it's hardly an ordeal to check it out.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Vincent]

[leechy]

do you think it could just be that its getting cold now and becouse its warming up its creating excess condensation the bike dnt splutter or anything starts first time aswell even without the choke doesnt lose revs and cut out on tikover am i just being paranoid dnt realy wnt to have to shell out for a rebuild as ive not long just dished a wod out for it and thanks peeps for the advice any 1 have the same thing with there 2strokes is it normal am i best just wipping the head off anyway and checking the o rings and if so what should i be looking for cheers again

[Vincent]

More than likely just condensation in the exhaust mixing with unburnt oil - a photo of the offending goo might help. Check around the join between the head and barrel for any leaks and look in the expansion tank or under the rad cap for any oil or oil/water mix.
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Space Is Deep

[symonh2000]

Take it for a longer run to get everything nice and warm, if it is just condensation it will evaporate and leave just black oil in the exhaust.

Also as Mattspratt said, check the coolant level isn't dropping.
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Four strokes is two strokes too many.

[leechy]

thanks evryone will take it for a good run out today and check evry thing that as been advised will let use know the outcome

[Spudly]

[leechy]

checked all above still getting the fluid so iv rang a mito specialist and he said straight away that its my right hand crank seal and my o rings what is happening is that gear box oil is getting in to the piston chamber and mixing with the rad fluid. he said 2 stroke oil wont turn creamy as its not thick enough and is desighned to mix with thinner fluids ie petrol so il have to drain the gear box oil the coolent replace the o rings take the clutch assembly out and this will expose the crank seal then replace that so thats some great news to start the day will have to walk to work then dnt wnt to do any more damage any 1 knw how much this would cost at a garage can get the parts for a little over 20£ but would rather get some 1 else to do it

[cb1rocket]

probably will cost about 400 - 500, its not a cheap job i'm afraid

[leechy]

doing it myself not paying that much f that already done the o rings sounds a 100 times better already the tool that had b4 me must of changed them b4 an not done it proper as they were pinched an not put in the grooves properly so they were split gna tackle the crank seal today cheers

[leechy]

job done bike sounds 100 times better than when i got it new o ring new crank seal new oil new coolent new spark plug no more walking to work for me thanks every 1 for all the advice