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05-29-2013, 02:31 PM
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Join Date: Nov 2010
Location: West Linn, Oregon
Posts: 1,351
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Minimizing Fuel Loss during tunnel work
I need to remove my boost pump from the tunnel and was wondering what others have done to minimize the amount of fuel that will be spilt when servicing the line in the tunnel. Will having a closed throttle provide enough of a vacuum (like a thumb on the top of a straw) to prevent the fuel from the engine side from sliding down hill and running out? Obviously turning off the fuel selector is required, but anything else that helps keep the mess down?
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CharlieWaffles - But you can call me " Mark"
RV-10
N928MT
Flying - AKA Still Tinkering
Build Project Site
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05-29-2013, 05:49 PM
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Join Date: May 2010
Location: Denver
Posts: 564
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I use a disposable diaper to catch any spill when removing either the fuel or oil filters, boost pump, etc. Works great.
Jim Berry
RV-10
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05-29-2013, 05:52 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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Thanks.
Quote:
Originally Posted by N15JB
I use a disposable diaper to catch any spill when removing either the fuel or oil filters, boost pump, etc. Works great.
Jim Berry
RV-10
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Idea stolen  
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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05-29-2013, 06:02 PM
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Join Date: Nov 2010
Location: West Linn, Oregon
Posts: 1,351
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Sounds reasonable but now the wife is going to wonder why I am buying a pack of diapers. Ha!
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CharlieWaffles - But you can call me " Mark"
RV-10
N928MT
Flying - AKA Still Tinkering
Build Project Site
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05-30-2013, 12:53 AM
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Join Date: Feb 2007
Location: Mpumalanga, South Africa
Posts: 1,065
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As the aircraft gets older, do you have to change sizes? - 0-3 months, 3-6 months, 6-12 months............
Seriously, good idea.
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Paul
Mercy Air, White River FAWV
RV-10 ZU-IIZ - "Zeus"
Building Bearhawk Bravo - RV-18 not available
2019 Donation Made
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05-30-2013, 11:36 AM
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Join Date: May 2010
Location: Denver
Posts: 564
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Quote:
Originally Posted by paul330
As the aircraft gets older, do you have to change sizes? - 0-3 months, 3-6 months, 6-12 months............
Seriously, good idea.
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Depends
Jim Berry
RV-10
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05-30-2013, 11:37 AM
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Join Date: Nov 2010
Location: West Linn, Oregon
Posts: 1,351
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Quote:
Originally Posted by N15JB
Depends
Jim Berry
RV-10
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Bad PHUN alert!
__________________
CharlieWaffles - But you can call me " Mark"
RV-10
N928MT
Flying - AKA Still Tinkering
Build Project Site
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05-30-2013, 12:01 PM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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Close fuel valve, disconnect fuel line at the servo or carb, place catch can or something to catch the fuel, run the boost pump until it empties out the line.
You can hear when the line is empty by the noise of the pump.
There is usually a minor amount that gets trapped in the filter housing but easily absorbed with a shop towel.
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Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
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05-30-2013, 12:02 PM
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Join Date: Nov 2010
Location: West Linn, Oregon
Posts: 1,351
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Thanks, in this case, the pump is bad, so no way to pump it out.
__________________
CharlieWaffles - But you can call me " Mark"
RV-10
N928MT
Flying - AKA Still Tinkering
Build Project Site
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05-30-2013, 12:08 PM
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Join Date: Jan 2007
Location: Battleground
Posts: 4,348
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Quote:
Originally Posted by CharlieWaffles
Thanks, in this case, the pump is bad, so no way to pump it out.
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If your in a position you can run your engine, run it and then close your fuel. It will run until it gets starved. That should leave only a small amount of fuel left in the system. If you can't run it, remove the line from the servo and lower it as far as you can and gravity will get some of the fuel out of the line.
Otherwise, diaper up!
__________________
Smart People do Stupid things all the time. I know, I've seen me do'em.
RV6 - Builder/Flying
Bucker Jungmann
Fiat G.46 -(restoration in progress, if I have enough life left in me)
RV1 - Proud Pilot.
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