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Date: Thu, 06 Mar 2008 18:58:05 -0600
From: David Staten <Dastaten@earthlink.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Disaster Averted
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Coolant was observed coming out the lower plug holes when he removed the 
spark plugs on the front rotor. I was overly brief. Its an internal leak 
for sure.

Chris is there now, just texted me regarding that finding.

Dave

Ed Anderson wrote:
> 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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