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Manual fuel pump problem

Old 02-18-2011 | 08:52 PM
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From: Carriere, MS
Default Manual fuel pump problem

Hey guys, I am back.....

After being out of the hobby for a few years, I am back in again. Anyway, one of the guys in the club gave me a Hangar 9 hand pump. If I remember right, he said he made repairs to it or rebuilt it. But for some reason, it will not pump any fuel thru it.

I took it apart and checked the gasket on it, it looked a little worn so I made another one to put in it. It still will not pump any fuel. At first, when I would blow thru the tube, I could hear air leaking from the pump housing, thats why I changed it.

Any ideas why it still won't pump fuel?????

Thanks
Old 02-18-2011 | 08:59 PM
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Default RE: Manual fuel pump problem

I find that they sometimes need to be primed. When mine won't pump, I put a syringe onto the "out" port of the pump and suck some fuel through it. That seems to prime it and then it pumps fine.
Old 02-18-2011 | 09:04 PM
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Default RE: Manual fuel pump problem

ok, will give that a try
Old 02-18-2011 | 09:37 PM
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Default RE: Manual fuel pump problem

Well, if you can't get it working you can always order a good hand pump like I have below. Mine has pumped 100 gallons of fuel in the last 7 years and still working like new.

http://www3.towerhobbies.com/cgi-bin...?&I=LXB887&P=7

big dan
Old 02-18-2011 | 10:08 PM
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Default RE: Manual fuel pump problem

Prime it. BIG, guess what happens when you put gas through your glow 6 shooter!!! I had one for gas and installed a new hose that I had on hand, turned out the new kit I had was for glow. Brain fart!! That repair didn't last long!
Old 02-19-2011 | 03:13 AM
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Default RE: Manual fuel pump problem

Yeah, I can imagine! That's why they also make the one below for gasoline only.

http://www3.towerhobbies.com/cgi-bin...?&I=LXB889&P=7

big dan
Old 02-19-2011 | 09:30 AM
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Default RE: Manual fuel pump problem

I had bought a big box of STUFF at an auction and found the kit in the box. I just didn't give it a lot of thought. Put in the new line and it worked great, That Day!! Next time it was like trying to get gas through a worm.
Old 02-19-2011 | 12:52 PM
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Default RE: Manual fuel pump problem

@LonnieMcc: My does the same, I found that when sucking the first gas It works way better if I place pump below gas gallon level, you know, gravity. Afterwards when the whole tubing is full of gas it don't matter. Good luck.
Old 02-19-2011 | 12:56 PM
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Default RE: Manual fuel pump problem

@bigdanusa: a while ago I bought a six shooter for gas and for some reason it was very hard to pump. After filling up the tank my arm was tired. Maybe I bought a broken one, who knows...As for now I fill up my gasser with a hangar 9 for gas, very easy.
Old 02-19-2011 | 01:31 PM
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Default RE: Manual fuel pump problem

I never tried the gas pump. It only takes about 100 cranks to fill up a 12oz glow fuel tank. They're easier to crank after about 50 fill ups. Like an engine, ya gotta break it in!

If nothing else, you should be able to arm wrestle anyone else at the field if using the Dave Brown Pump!

big dan
Old 02-19-2011 | 03:40 PM
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Default RE: Manual fuel pump problem

A couple weeks ago my electric pump gave up the ghost on me. I knew it just needed to be opened and cleaned but why bother, I had a magnum hand crank in my flight box too. After the second day of flying I came home and cleaned out my electric. I have bigger tanks in most of my planes and I have a lot better things to be doing then turning that crank!! Those cranks are way more work then I want to be doing on a nice day. My electric pump is over 20 years old so if it quits on me again a replacement may be in my future.
Old 02-19-2011 | 07:02 PM
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Default RE: Manual fuel pump problem


ORIGINAL: LonnieM...

Any ideas why it still won't pump fuel?????

Thanks


Lonnie for the geared manuals of most brands Try both the suggestions of 42etus and Jaunico. Also when storing or anytime you are through for the day always crank fuel through the fill line into the line and stop the pump with fuel in prime.

Every month or so just crank the pump a few turns to keep the prime filled.

Old 02-19-2011 | 07:16 PM
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Default RE: Manual fuel pump problem

I much prefer the geared manual despite their perceived deficiencies. They are far easier to use than the six Shooter and when mounted on a can such as mine you can actually turn the crank very slowly to manually prime the engine if needed with just one hand. That you can,t do nearly as well with the six shooter.

Also geared manuals have a big advantage over electrics in that you can simply by the expediant of counting cranks in and out soon develop your fuel consumption rate and predictable flight endurance for any airplane.

For the majority of aircraft using up to about fourteen ounces the geared manual is quite practical and a pleasure to use.

Actually currently one of my airplanes that holds the most tankage a single with 56 ounces does not take all that long and kind of enjoyable allowing me to relax and enjoy the pit carnage going on around me

John
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Old 02-19-2011 | 08:33 PM
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Default RE: Manual fuel pump problem

John,
Holy crap!!!!!!!!!!!!!!!! I live with 3 pumps total. One for glow, one for gas, and one for smoke fluid!!!!!!

Ken
Old 02-19-2011 | 08:43 PM
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Default RE: Manual fuel pump problem

John,John,John... you got issues man. [sm=bananahead.gif] LOL

That's OK, I'm obsessed with collecting hardware.


Pete


Old 02-19-2011 | 08:47 PM
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Default RE: Manual fuel pump problem

I only have the two, one for gas and one as a back up. I do use a catch can with my electric and I don't seem to go dead stick or run out of fuel during flight. I just haven't found any advantage to crank pumps. I don't care for the six shooters at all. IF, a big IF they made a high volume crank pump I would switch over, say 10 cranks to fill a 16 ounce tank. When I fill one of my gassers with a 20 ounce tank it just goes on forever!
Old 02-19-2011 | 10:18 PM
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Default RE: Manual fuel pump problem










.
Old 02-19-2011 | 10:20 PM
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Default RE: Manual fuel pump problem


ORIGINAL: Oberst

John,John,John... you got issues man.


Hmmm - I suppose I did neglect the Jett Tanker for the bubbless tanked airplanes and the fuel bulb for the little bitty engines of course can,t forget the syringe with Tygon for the diesel and the coleman/70 wt mix for the old sparker[8D]
Old 02-20-2011 | 02:46 AM
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Default RE: Manual fuel pump problem

Thanks guys for the help. Primed it and now it works great again

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