Dave,

Before you tear into it, I have on two occasions had green fluid dripping from a tail pipe with the same Oh S--- !!  reaction.  However, they happened after pretty cold temps and after firing the engine up expecting to see the coolant pressurized by combustion gases, the leak went away.  I don't know but, I suspected that the cold temps caused something to shrink just enough for a bit of coolant to leak through.

Before tearing it down, I would remove the exhaust and shine a light (borescope would be idea) and do a visual inspection inside the rotor housing looking for signs of a leak.  It might help to use a compressor to pressurize the coolant system to 15-20 psi.  It you have a coolant O ring leak, the pressure will either seal it OR you will likely see the coolant leaking into the housing.    Check around the bottom of the engine where the PSUR attaches if it is caused by a loose tension bolt you will likely see signs of green coolant there.  Most of the time if its a bolt it leaks on the outside so you shouldn't see in it the exhaust - but, it might run along the bottom of the pipe giving the impression its coming out the exhaust.

Good Luck


Ed

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