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sarg314(at)gmail.com
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 Posted: Mon Jan 11, 2010 12:53 pm Post subject: detecting fuel leaks |
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Yesterday I put a couple gallons of avgas in my left tank (for the first time), closed the AFP purge valve, selected left tank, unscrewed the drain valve from the right tank and switched on my AFP boost pump, also for the first time. The fuel did what it was supposed to. It got sucked out of the left tank through the whole system and into the right tank and dribbled out into a bucket. I blew a quart or so through it just to try to remove the years of dust and debris. So far so good.
I didn't see any leaks, but there is a lot of fttings to check.  I am surprised at how quickly avgas evaporates. A small drop of gas at a hose fitting might evaporate before I could get around to looking for it. Is there anything that can be wrapped around a joint that would leave a telltale of some sort if it got wet with avgas? A sort of litmus paper for gas instead of acid?
I hope to start the engine this weekend and fly within a few weeks after that.
--
Tom Sargent, RV-6A, final assembly.
[quote][b]
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pitts_pilot(at)bellsouth.
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| Posted: Mon Jan 11, 2010 1:20 pm Post subject: detecting fuel leaks |
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Tom, put a piece of paper towel under the fittings and close
off the return line to the tank so you can build up some
pressure ..... shouldn't take long for a blue stain to
appear on the paper towel if it's leaking.
Linn
thomas sargent wrote:
| Quote: | Yesterday I put a couple gallons of avgas in my left tank (for the first
time), closed the AFP purge valve, selected left tank, unscrewed the
drain valve from the right tank and switched on my AFP boost pump, also
for the first time. The fuel did what it was supposed to. It got
sucked out of the left tank through the whole system and into the right
tank and dribbled out into a bucket. I blew a quart or so through it
just to try to remove the years of dust and debris. So far so good.
I didn't see any leaks, but there is a lot of fttings to check. I am
surprised at how quickly avgas evaporates. A small drop of gas at a
hose fitting might evaporate before I could get around to looking for
it. Is there anything that can be wrapped around a joint that would
leave a telltale of some sort if it got wet with avgas? A sort of
litmus paper for gas instead of acid?
I hope to start the engine this weekend and fly within a few weeks after
that.
--
Tom Sargent, RV-6A, final assembly.
*
*
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chaskuss(at)yahoo.com
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| Posted: Mon Jan 11, 2010 4:56 pm Post subject: detecting fuel leaks |
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Yes, talc or talcum powder will work. The dye in the av gas will stain the powder.
Charlie Kuss
--- On Mon, 1/11/10, thomas sargent <sarg314(at)gmail.com> wrote:
| Quote: | From: thomas sargent <sarg314(at)gmail.com>
Subject: detecting fuel leaks
To: "rv-list" <rv-list(at)matronics.com>
Date: Monday, January 11, 2010, 3:51 PM
Yesterday I put a couple gallons of avgas
in my left tank (for the first time), closed the AFP purge
valve, selected left tank, unscrewed the drain valve from
the right tank and switched on my AFP boost pump, also for
the first time. The fuel did what it was supposed to. It
got sucked out of the left tank through the whole system and
into the right tank and dribbled out into a bucket. I blew
a quart or so through it just to try to remove the years of
dust and debris. So far so good.
I didn't see any leaks, but there is a lot of fttings
to check. I am surprised at how quickly avgas
evaporates. A small drop of gas at a hose fitting might
evaporate before I could get around to looking for it. Is
there anything that can be wrapped around a joint that would
leave a telltale of some sort if it got wet with avgas? A
sort of litmus paper for gas instead of acid?
I hope to start the engine this weekend and fly within a
few weeks after that.
--
Tom Sargent, RV-6A, final assembly.
|
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http://www.matronics.com/Navigator?RV-List |
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altoq(at)cebridge.net
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| Posted: Thu Jan 14, 2010 9:51 am Post subject: detecting fuel leaks |
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Tatgac
Use spray on type foot power ( Desinex, etc ). Its mostly talcum and works
good, also lubricates Teflon Hemi joints. Developer for Die penetrant also
does good job of detecting leaks.
John D
--------------------------------------------------
From: "Charles Kuss" <chaskuss(at)yahoo.com>
Sent: Monday, January 11, 2010 6:31 PM
To: <rv-list(at)matronics.com>
Subject: Re: detecting fuel leaks
| Quote: |
Yes, talc or talcum powder will work. The dye in the av gas will stain the
powder.
Charlie Kuss
--- On Mon, 1/11/10, thomas sargent <sarg314(at)gmail.com> wrote:
> From: thomas sargent <sarg314(at)gmail.com>
> Subject: detecting fuel leaks
> To: "rv-list" <rv-list(at)matronics.com>
> Date: Monday, January 11, 2010, 3:51 PM
> Yesterday I put a couple gallons of avgas
> in my left tank (for the first time), closed the AFP purge
> valve, selected left tank, unscrewed the drain valve from
> the right tank and switched on my AFP boost pump, also for
> the first time. The fuel did what it was supposed to. It
> got sucked out of the left tank through the whole system and
> into the right tank and dribbled out into a bucket. I blew
> a quart or so through it just to try to remove the years of
> dust and debris. So far so good.
> I didn't see any leaks, but there is a lot of fttings
> to check. I am surprised at how quickly avgas
> evaporates. A small drop of gas at a hose fitting might
> evaporate before I could get around to looking for it. Is
> there anything that can be wrapped around a joint that would
> leave a telltale of some sort if it got wet with avgas? A
> sort of litmus paper for gas instead of acid?
> I hope to start the engine this weekend and fly within a
> few weeks after that.
> --
> Tom Sargent, RV-6A, final assembly.
>
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