Today's Message Index:
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1. 08:48 AM - fuel valve (thomas sargent)
2. 08:59 AM - Re: fuel valve (Ralph E. Capen)
3. 09:07 AM - Re: fuel valve (Brian Huffaker)
Message 1
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In doing my annual inspection, when I was running the engine to warm up the
oil for an oil change, I tried to stop the engine by turning the fuel
selector valve to OFF. It continued running without slowing down for what
seemed like a long time (probably 1/2 to 1 minute) until I got tired of
waiting and turned off the purge valve (AFP fuel injection) which stopped
it immediately. The fuel flow gauge showed a steady 1.4 - 1.5 gph.
Did I just not wait long enough or is the fuel valve worn out? It's the
valve that Van supplied with the kit and otherwise shows no problems,
doesn't feel worn, etc.
--
Tom Sargent, RV-6A
Message 2
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I think you did not wait long enough....and the purge valve is right up there next
to the injectors for an immediate cut-off. Residual fuel could still be pressurised
by the mechanical pump and keep the engine running for a couple of
minutes....mine ran for a while with the selector in the off position....while
I was still creating my startup checklists...
-----Original Message-----
>From: thomas sargent <sarg314@gmail.com>
>Sent: Jul 30, 2012 11:48 AM
>To: rv-list <rv-list@matronics.com>
>Subject: RV-List: fuel valve
>
>In doing my annual inspection, when I was running the engine to warm up the
>oil for an oil change, I tried to stop the engine by turning the fuel
>selector valve to OFF. It continued running without slowing down for what
>seemed like a long time (probably 1/2 to 1 minute) until I got tired of
>waiting and turned off the purge valve (AFP fuel injection) which stopped
>it immediately. The fuel flow gauge showed a steady 1.4 - 1.5 gph.
>
>Did I just not wait long enough or is the fuel valve worn out? It's the
>valve that Van supplied with the kit and otherwise shows no problems,
>doesn't feel worn, etc.
>
>--
>Tom Sargent, RV-6A
Message 3
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On Mon, 30 Jul 2012, thomas sargent wrote:
> In doing my annual inspection, when I was running the engine to warm up the
> oil for an oil change, I tried to stop the engine by turning the fuel
> selector valve to OFF. It continued running without slowing down for what
> seemed like a long time (probably 1/2 to 1 minute) until I got tired of
> waiting and turned off the purge valve (AFP fuel injection) which stopped
> it immediately. The fuel flow gauge showed a steady 1.4 - 1.5 gph.
>
> Did I just not wait long enough or is the fuel valve worn out? It's the
> valve that Van supplied with the kit and otherwise shows no problems,
> doesn't feel worn, etc.
>
The engine can run for quite a while on the fuel in the lines and the
gasocolator, especially at idle. I once meant to switch tanks and
switched the fuel off in flight, it took about 30 seconds before the
engine stopped. Did start right back up again when I switched the fuel
back on.
Brian Huffaker, DSWL (bifft@xmission.com)
RV-8A 80091 Planning panel
1/4 Starduster II N23UT down for engine overhaul
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