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ATF from cylinder head? Pics

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Kid ran his 50sx for a couple hours today and I noticed a thin film of red fluid at the back of the cylinder at the head. I can only imagine it’s the atf as my premix is clear. However, I’m confused since I would assume coolant would come out too. The only thing I can think of is maybe some grease was used on the o-rings when the top end was done (previous owner). Is it possible for the atf to get up to the head thru a crank seal and head gasket? Bike runs and idles fine and doesn’t smoke...I’m stumped. IMG_1719.jpgIMG_1719.jpg

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Regardless of what colour it is ,nothing should be seeping out the head. What colour is your coolant ? STD ktm is pinkish

Maybe clean it up and run it a little more ,if it's grease it will stop

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Blue engine ice is in there now. I thought of it being grease just recently. But I agree, shouldn’t be anything coming out. I also assumed if it was atf it would be dirty or discolored, not look brand new. I have the seals and o-rings but I’d rather not tear it down if I don’t have to. Leak down test maybe?

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Could do ,I think it's grease as the outside edge technically isn't sealed

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Best to peel off the head - looks like coolant AND maybe RTV sealant from the head gasket.  Replace it.

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Check the head bolts torque before doing anything to see if they are right. Maybe they didn’t get torque right. 

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On ‎3‎/‎4‎/‎2018 at 4:31 PM, mog said:

Could do ,I think it's grease as the outside edge technically isn't sealed

This ^......grease was probably used ( like I do) to hold the head O ring in the groove when reassembling the cylinder/head, and the outside edge of the head is not sealed tight so it melts and leaks a bit for a while.

 

Joe

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There is not ATF in the bike. Wipe it off and do a few more laps. I use Redline grease that is the same color. Ride it!

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There is not ATF in the bike. Wipe it off and do a few more laps. I use Redline grease that is the same color. Ride it!

There is in the gearbox. I thought it strange it would make its way up and out thru two different seals anyway. It runs too well for that many leaks. Thanks for the responses.
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Thanks for the gentle information, I am humbly corrected. It would indeed be strange without oil passeges into the head. Bless the lubrication Gods of 2 cycle power.

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