I can't say I've seen that before... weird. Give the service manager those pics. It may go away, might be perfectly fine... ask him for a new hose and see what he says.
Like Ray, I’ve NEVER seen that one before. Talk to the service manager because I don’t see that being good or ending well. I’ll add that IF I keep my FJR I plan to replace the hoses on the next coolant change and I plan to do so with silicone hoses that’ll be good for the rest of my life, never Mess with them again.
never seen or heard about this either the colour looks a bit like you get when you have a blown headgasket and the oil mixes with the coolant
but i don't think that that's the case here seems like its the hose itself i would bring that hose back to where you got it from this doesn't seem normal to me and i wouldn't want that goop to end up in my water pump
i'm still running the 15 year old hoses i've only got 1 that's a bit iffy but for now it seems to hold if it aint broken don't fix it right?
that does look close to head gasket issues minus the milkiness normally associated with that. Did you look down the hose before install to make sure it was clean? Just a thought....
Thanks for the replies gents though you're freaking me out with talk of blown head gaskets!!
Ive looked close at the coolant that was drained, no black chunks that would indicate rotting hoses, no milkiness in the coolant or my oil through the sight window, no measurable loss of coolant or oil- and the coolant, other than being slightly darker than when it went in ( less florescent compared to new) looks and smells normal.
How would a blown head gasket produce evidence of being so through the walls and past the clamps of a brand new hose??
I have inspected the old hose, which doesn't look dissimilar to the new one, for cracks splits tears, anything that could let coolant into the inner reinforcing fibers and found nothing. I have run my finger along the inner wall and try as I may no black chaffing or evidence of wear or corrosion.
I did look down the pipe that the new hose connected to and found nothing but normal looking coolant. No gunk, no build up of any sort and no milk. I also inspected the thermostat thoroughly and other than a worn flattened and crusty seal, which I now understand was the true source of my leak, the thermostat appears normal. No goo, no chunks no milk, no evidence of corrosion to the seal (no black rubs off)
Hard as it is to believe and completely unusual it does appear to be the hose itself (both of them old and new) that is purging some sort of hose byproduct from their ends under temperature.
With the side plastic off and waiting until monday to get an answer I decided to detail the engine in the areas that are unreachable to keep myself occupied. I noticed that the mystery solution on "the hose" had dried or receded, I dont know which, and looked normal.
This hose, which is connected to the die cast half of the thermostat housing is buried way up under the top half of the faring, behind the glove box, behind the fill cap where the plastic tapers into the tank. Its not an area that is usually seen when doing a service like changing coolant, which I do annually. Unless you have the nose off you wouldn't have a clear view of it.
Is it unreasonable to think that the original hose had the dried goo on its ends the entire time Ive had the bike and that it wasn't noticed until my thermostat housing began leaking and I mistook the appearance of the hose ends as a leak?
I ran the bike to temperature again today after topping off the coolant. I also went for a short ride around the neighborhood. "The hose" looked normal the entire time. Only after shutting the bike off did it react again exhibiting the same symptoms but to a lesser extent.
Another thing I did note which may or may not be of consequence. "The hose" is the one hose that is highest in the system and the only hose that is on the motor side of the thermostat. all of the other hoses are on the radiator side of the t-stat. Also
, after draining the coolant, installing "the hose" , and refilling the system, it "the hose" would have been full of air until the t-stat opened.
I guess I'll know more tomorrow. I'll report back either way.