[ROVERNET - UK] more on 3500s AED fuel shut off valve

peter king peter at king-co.com
Sun Apr 10 03:11:31 BST 2005

Thanks, Peter.
I took it out and discovered how it worked today, but the question I 
have is how is it intended to work? When I open the valve and lock it 
in, the engine won't start--seems to flood. When I push it all the way 
in the engine starts and runs well, but there is emission of some sort 
-like vaporized fuel-from the valve handle opening. If I pull the valve 
back out, the engine stalls immediately. Can you tell me how the AED is 
supposed to operate, and if this sounds like the AED is faulty?



On Apr 9, 2005, at 9:57 PM, sspmilr at netzero.net wrote:

> Hi Peter:
> Here's the "poop" on the shut off valve:  By pulling the valve all the
> way out and turning it counter clock wise, one seats a gasket which
> seals the valve.  When turning the valve counter clock wise you are
> engaging threads which hold the valve in the open position.  When
> turning the valve clock wise, at the same time pushing on the "T-
> Handle", it shuts the AED off.  The valve is held in the "off position"
> by engine vacuum.  One can drive out the pin on the T-handle and push
> it out of the body.  You may have to do this if the gasket is bad.  One
> can make or find a gasket that will replace the original.
> Peter Miller
> Port Orchard, Wa.
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