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Fuel tank vents

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rockford67

Joined: 14 Jul 2011
Posts: 21

Posted: Mon Aug 15, 2011 4:49 pm Post subject: Fuel tank vents

Hey Pulsar owners



Ran into a guy today who worked on my plane before I bought it and h told me I had a fuel problem. 



Seems one of the vent lines was blocked They tried to poke through as far as they could but couldn't get to the blockage. So... Now what? He seemed to think putting in a new vent was better than ripping open the wing - I agree!



What about a vented fuel cap? Thoughts? Suggestions?



Thanks

Chris

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mortweaver(at)sbcglobal.n
Guest

Posted: Mon Aug 15, 2011 5:57 pm Post subject: Fuel tank vents

Have you already tried clearing the line with high air pressure...like 80-100 lbs?  Depending on the location of your fuel filler cap, the opening may be opposite and close to where the vent line enters the top of your fuel tank.  If need be, I can with the aid of an inspection mirror,  reverse feed a small diameter stiff wire through a wing fuel filler opening into the vent line on my XP.  Hopefully your blockage is not in one of the 90 degree bends near the wing tip.  You may very well have an insect that has swelled after contact with fuel and is creating a rigid blockage.  I would go to the trouble of making an adapter to insert through the wing fuel filler where the pointed tip could be held firmly on the end of the vent tube and high pressure air be applied to blow back through the line.  Good  luck.

 Dave Weaver



--- On Mon, 8/15/11, rockford67 <cphorsten(at)yahoo.ca> wrote:



  	  Quote: 	
		  

From: rockford67 <cphorsten(at)yahoo.ca>

Subject: Fuel tank vents

To: pulsar-list(at)matronics.com

Date: Monday, August 15, 2011, 7:49 PM



 --> Pulsar-List message posted by: "rockford67" <cphorsten(at)yahoo.ca (cphorsten(at)yahoo.ca)>



Hey Pulsar owners



Ran into a guy today who worked on my plane before I bought it and h told me I had a fuel problem. 



Seems one of the vent lines was blocked They tried to poke through as far as they could but couldn't get to the blockage. So... Now what? He seemed to think putting in a new vent was better than ripping open the wing - I agree!



What about a vented fuel cap? Thoughts? Suggestions?



Thanks

Chris





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 [quote][b]

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rockford67

Joined: 14 Jul 2011
Posts: 21

Posted: Mon Aug 15, 2011 6:09 pm Post subject: Re: Fuel tank vents

Thanks Dave... I'm not sure how they tried to release the blockage. All he said was they tried to reach it but came up against a wall. Whether that was a bend in the line or the actual blockage I don't know, and I take it they pushed from the outside in. I've had a mud dauber block up my pito tube on my cessna. Pain in the but! 

I take it you've had a similar experience. I'm going to get a mirror and see what I can see inside the tank. Wouldn't all the vent lines be in the same place?

Thanks

Chris

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leubanks(at)sunflower.com
Guest

Posted: Mon Aug 15, 2011 7:46 pm Post subject: Fuel tank vents

Just a suggestion but I once cleared a fuel vent on a Pulsar  using a guitar 

string. Those are very flexible and made it through the bends that went into 

the fuselage tank. I pushed while turning it by hand and it cleared out a 

plug that was restricting the vent inside the tank. I think that I also 

modified the end of the string so that it had a slight cutting edge to it.

Larry Eubanks

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kymc(at)internode.on.net
Guest

Posted: Mon Aug 15, 2011 8:40 pm Post subject: Fuel tank vents

Once you have the blockage cleared a neat trick to stop it happening again is to use a split pin slightly smaller than the vent tube - just put a small kink in one side of the pin so that it stays in the vent tube.  Put a ribbon on it to remind you to remove before flight but if you do forget air can still get past the pin so you won't collapse your tank.



Stops any insects from getting and also does not create "bad" things from happening if you forget.  I use that method and works just fine.



As far as getting the blockage out try getting some very small flexible cable from a hardware place and feed in while turning.  



cheers



Kym

Australia



On 16/08/2011, at 1:14 PM, Larry Eubanks wrote:



 	  Quote: 	
		   

 

 Just a suggestion but I once cleared a fuel vent on a Pulsar  using a guitar string. Those are very flexible and made it through the bends that went into the fuselage tank. I pushed while turning it by hand and it cleared out a plug that was restricting the vent inside the tank. I think that I also modified the end of the string so that it had a slight cutting edge to it.

 Larry Eubanks

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gregsmi

Joined: 01 Jan 2011
Posts: 262
Location: Topeka, KS

Posted: Tue Aug 16, 2011 4:50 am Post subject: Fuel tank vents

Larry, we finally know why your guitar sounds a little sharp. 

  

 Let's go flying.

  

 Greg

  

  In a message dated 8/15/2011 10:46:21 P.M. Central Daylight Time,  leubanks(at)sunflower.com writes:

  	  Quote: 	
		  -->    Pulsar-List message posted by: "Larry Eubanks"    <leubanks(at)sunflower.com>



Just a suggestion but I once cleared a    fuel vent on a Pulsar  using a guitar 

string. Those are very flexible    and made it through the bends that went into 

the fuselage tank. I pushed    while turning it by hand and it cleared out a 

plug that was restricting    the vent inside the tank. I think that I also 

modified the end of the    string so that it had a slight cutting edge to it.

Larry Eubanks  the  ies  ay                 - MATRONICS WEB FORUMS               - List Contribution Web Site  p;                             



	


 [quote][b]

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kelly.p.crowley(at)boeing
Guest

Posted: Tue Aug 16, 2011 5:31 am Post subject: Fuel tank vents

LOL. That was funny!

From: GREGSMI(at)aol.com [mailto:GREGSMI(at)aol.com]

Sent: Tuesday, August 16, 2011 07:49 AM

To: pulsar-list(at)matronics.com <pulsar-list(at)matronics.com>

Subject: Re: Pulsar-List: Fuel tank vents

Larry, we finally know why your guitar sounds a little sharp.

Let's go flying.

Greg

In a message dated 8/15/2011 10:46:21 P.M. Central Daylight Time, leubanks(at)sunflower.com writes:

Just a suggestion but I once cleared a fuel vent on a Pulsar  using a guitar

string. Those are very flexible and made it through the bends that went into

the fuselage tank. I pushed while turning it by hand and it cleared out a

plug that was restricting the vent inside the tank. I think that I also

modified the end of the string so that it had a slight cutting edge to it.

Larry Eubanks the ies ay              - MATRONICS WEB FORUMS            - List Contribution Web Site p;

- The Matronics Pulsar-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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leubanks(at)sunflower.com
Guest

Posted: Tue Aug 16, 2011 5:46 am Post subject: Fuel tank vents

  Maybe if I had a real guitar instead of just one string it might  sound better too. This is real boring. plunk plunk plunk plunk plunk plunk  plunk. I wrote that song myself though.

   I'll fly if the weather gets a little calmer. Gusts to 25  today!

 Larry

 [quote]   ---

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