Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Fuel Contamination

Matronics Email Lists Forum Index -> Kitfox-List

View previous topic :: View next topic

Author Message

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Thu Oct 01, 2009 8:51 am Post subject: Fuel Contamination

All,

         I don't want to start the fuel controversy going, but have a 

specific question regarding contamination. My friend has a IV he's 

trying to get running. He's using auto fuel, presumably with alcohol, 

(CA,) in Kreemed tanks. He has two of the clear filters, one for each 

wing tank, and one more metal cased filter downstream of the fuel pump.

         The problem is that the fuel is coming out of his wing tanks 

piss yellow and seems to be plating the filters with some kind of 

invisible residue, rendering them impassable. As we haven't done much 

flying yet we haven't seen the plating in the carbs or intake 

manifolds yet, however I expect to. One more symptom is that very 

small flecks of rsome ed/brown substance is coming out of one of the tanks.

         My suspicion is that someone at some time left fuel in the 

tank and it dried and varnished the bottom of the tank. (We've tried 

inspecting the outlet area with no success.) I don't think it's a 

Kreem problem. It could be a resin problem if some of the tank we 

can't see didn't get covered with Kreem. Does anyone have a good 

recipe for removing varnish, without removing Kreem?



Thanks,

Guy Buchanan

San Diego, CA

K-IV 1200 / 582-C / Warp / 400 hrs. and counting

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

kitfox555(at)sbcglobal.ne
Guest

Posted: Thu Oct 01, 2009 4:24 pm Post subject: Fuel Contamination

Guy, my kitfox 2 has the same problem I'm going to strip out the kreem and use a tank sealer  this week end , I have had piss yellow gas and small flake come out of the tank . I feel that the kreem was not all over the inside of the tank or it was not clean enough when it was kreemed year ago to with stand the 10% we get today. I do siphen out all the gas each day to fold the wings . I have 125 hours on it , I thought it was breaking down the resin in the tank  mine is the old tanks from the 90's ,I just ordered some from kbs tank sealer we will see,  Jerry



 Jerry Evans 

 KitfoxII

 Magalia Calif.

 N582'er'

 kitfox 555

--- On Thu, 10/1/09, Guy Buchanan <bnn(at)nethere.com> wrote:

  	  Quote: 	
		  

From: Guy Buchanan <bnn(at)nethere.com>

Subject: Fuel Contamination

To: kitfox-list(at)matronics.com

Date: Thursday, October 1, 2009, 9:48 AM



 --> Kitfox-List message posted by: Guy Buchanan <bnn(at)nethere.com (bnn(at)nethere.com)>



All,

        I don't want to start the fuel controversy going, but have a specific question regarding contamination. My friend has a IV he's trying to get running. He's using auto fuel, presumably with alcohol, (CA,) in Kreemed tanks. He has two of the clear filters, one for each wing tank, and one more metal cased filter downstream of the fuel pump.

        The problem is that the fuel is coming out of his wing tanks piss yellow and seems to be plating the filters with some kind of invisible residue, rendering them impassable. As we haven't done much flying yet we haven't seen the plating in the carbs or intake manifolds yet, however I expect to. One more symptom is that very small flecks of rsome  ed/brown substance is coming out of one of the tanks.

        My suspicion is that someone at some time left fuel in the tank and it dried and varnished the bottom of the tank. (We've tried inspecting the outlet area with no success.) I don't think it's a Kreem problem. It could be a resin problem if some of the tank we can't see didn't get covered with Kreem. Does anyone have a good recipe for removing varnish, without removing Kreem?



Thanks,

Guy Buchanan

San Diego, CA

K-d much much onics.com/Navigator?Kitfox-List" target=_blank>http://www.matronics.com/N=               - MATRONICS sp;                 -Matt Dralle, L.com/contribution" =======





	
 [quote][b]

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Fri Oct 02, 2009 9:08 am Post subject: Re: Fuel Contamination

Here is some info on a filter that I took off a plane this year. 

http://rotaxaircraft.com/forum/viewtopic.php?f=15&t=140



No problem with the tanks but the gunk that collected in the paper filter. 

I personally think that if you are using paper filters  that I would be very cautious.  It is ethanol/water or other junk that is making a mess  of these ?  I use gascolator and have no problems at all with it or my  glass filters with plastic screens. 

Dave 

I have over 800 hours in my Kitfox in last few years alone with ethanol gas and NO KREEM -- go figure !!



http://rotaxaircraft.com/forum/viewtopic.php?f=15&t=140

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

_________________
Realtime Kitfox movies to separate the internet chatter from the truth
http://www.youtube.com/user/kitfoxflyer
Hundreds of Kitfox Movies
Most viewed Kitfox on youtube
Most popular on youtube
Highest rated on youtube

KeysFox

Joined: 05 Jan 2009
Posts: 137

Posted: Fri Oct 02, 2009 9:50 am Post subject: Fuel Contamination

 	  Quote: 	
		  I have been replacing my CAV 110  wing tank sump drains that gradually

become sticky or difficult to move about every two years. I have been
	


using auto gas WITHOUT ETHANOL, flying 60 hours per year about an hour at

a time, sumping before each flight. No crud in the in-line glass filters

with plastic filter elements or gascolator between annuals

The last new CAV 110 leaked almost immediately because the small "o" ring

seemed to swell and come out of its grove.

Lockwood Aviation the Kodiak Rotax shop in Sebring by the way also

recommends against paper filters in their Rotax courses.



Any suggestions on the sump drains folks?



BJ

N154K

bjones(at)dmv.com

443-480-1023




 	  Quote: 	
		  

 Here is some info on a filter that I took off a plane this year.

 No problem with the tanks but the gunk that collected in the paper filter.

 I personally think that if you are using paper filters  that I would be

 very cautious.  It is ethanol/water or other junk that is making a mess

 of these ?  I use gascolator and have no problems at all with it or my

 glass filters with plastic screens.

 Dave

 I have over 800 hours in my Kitfox in last few years alone with ethanol

 gas and NO KREEM -- go figure !!



 --------

 Rotax Dealer, Ontario Canada

 http://www.cfisher.com/

 Awesome *New Forum *

 http://rotaxaircraft.com/forum/

 Realtime Kitfox movies to separate  the internet  chatter from the truth

 http://www.youtube.com/profile_videos?user=kitfoxflyer





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 66083#266083

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

_________________
B Jones
N154K
443-480-1023

dave

Joined: 22 Sep 2006
Posts: 1382

Posted: Fri Oct 02, 2009 10:09 am Post subject: Re: Fuel Contamination

I never check my wing  tanks sumps.  

I fell out in my hand about 5  years ago and I put in epoxy and it never leaked since. I afraid to touch other one in fear it leaks. 

It not much of a sump anyhow on those tanks.



I have inline glass filter from wingtanks prior to main tank. And a gascolator  before fuel pump.  



Maybe I just lucky ?    Working on my second thousand hours in this Kitfox IV now   !!

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

helili(at)chahtatushka.ne
Guest

Posted: Fri Oct 02, 2009 2:15 pm Post subject: Fuel Contamination

Easy fix!  Replace the original "O" rings with VITON (material that they are

made of) "O" Rings.  Works on 3 aircraft at our local airport using 10%

ethanol.  No leaks, or other problems with sump drains in the last 2 years

on these aircraft.  Cost was 6 cents per VITON "O" ring at a local gasket

supply house.



John Hart

KF IV, NSI Subaru

Wilburton, OK

--

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

Dick Maddux

Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl

Posted: Sat Oct 03, 2009 4:54 am Post subject: Fuel Contamination

Dave,

  Excellent example of why you don't use a paper filter (although that  gunk probably would have collected on a metal/plastic screen as well) When I  went to Lockwoods Rotax school they emphasized to NEVER,NEVER use a paper  filter. With ethanol in the fuel the water that is absorbed by the  alcohol can make the filter impassable for fuel.

                                                                    Dick Maddux

                                                                    Fox 4

                                                                    Milton,Fl

  [quote][b]

- The Matronics Kitfox-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:

http://www.matronics.com/Navigator?Kitfox-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Kitfox-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum