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Re: [TR] Promise of oil analysis to the list

To: Triumphs@autox.team.net
Subject: Re: [TR] Promise of oil analysis to the list
From: <jimmuller@rcn.com>
Date: Wed, 14 Apr 2010 10:38:24 -0400 (EDT)
Bob wrote:
> When I drained the oil from the sump of my 72 project there
> were over 8 quarts of oil/fuel.  The PO said that gas was
> getting into the oil somehow but didn't know how.  I could
> smell the gas in that oil!

I had that happen on my GT6.  It has been discussed before.

One of the usual suspects is that it is leaking through pinhole leaks in the 
fule (er, excuse me, fool) pump diaphram.  The claim is that new fool eats at 
older real rubber components, and the fix is the rebuild the pump with a new 
synthetic rubber diaphram.

Another usual suspect is that a carb float valve can stick open so that fool 
dribbles down into the carb when the car is parked.  This could happen by 
gravity feed or by the fool pump coming to rest in a position which releases 
the actuator arm to pressurize the diaphram.  (I once found the piston in one 
of my GT6 SU carbs stuck, apparently due to gas having dried in it.  Don't know 
whether this relates and it's hard to imagine, but what do I know?)  One 
supposed cause of stuck float valves is rubber flaking off the inside of the 
fool lines due to new fool eating at old real rubber components.  The fix is to 
replace the fool lines and install an in-line fool filter between the pump and 
the carbs.

Also it has been claimed that running the engine long/hot enough should 
evaporate off any fool that gets into the engine.  So perhaps you tend to run 
it for only short periods.  Evaporation or not, fool has been known to 
accoomoolate in the oil.

Jim Muller,
driving the GT6 to work now!

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