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rehn(at)rockisland.com
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 Posted: Thu Oct 04, 2012 9:30 am Post subject: Mod 33 Water drains |
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I purchased this mod sometime ago and have yet to install it. I have not had any issues until lately, I think. I did not like the idea of adding more fittings and complications to the fuel system not to mention it looks like a pain to do! So I am looking for two things. How many are experiencing water in their Fuel and what kind of fuel? And those of you that have installed the Mod, how tough was it and have you found water?
Regarding my issue, I fueled up with 6 gallons I now know has up to 10% ethanol on top of about 6 gallons not sure about alcohol .In the past my fuel has been alcohol free, so maybe this has drawn in some water. Plane sat for ten days, no rain but humid. Started great, warmed up, ran mag check, fine, went to take off and engine stumbled badly as I approached full throttle thinking the water if any started moving forward to tank outlets. Backed off and ran fine again, did the same a second time, had enough, taxied back running fine. Have since raised tail to get any possible water to drain forward and pumped out 4 gallons, no water. However I may have run all the water through. I checked the turbo and all looks well.
I have checked fuel flow and filter all fine. I ordered a bing overhaul kit and have the carbs dismantled, so far they look good. Should have everything back together by weekend unless I tackle mod 33 so would like advice there. I am thinking water is the prime suspect. I will have the carbs totally apart in a few hours so will be able to rule these in or out. I have had over ten years of “sewing machine” fine running engine so this is not fun! Thank you for help and advice.
Jerry
914 XS Mono
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klinefelter.kevin(at)gmai
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| Posted: Thu Oct 04, 2012 10:38 am Post subject: Mod 33 Water drains |
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Hi Jerry,
I don't think it's water. I run 10% ethanol all the time, have the drains and a gascolator and have never found water. The alcohol will absorb water and therefor not show up at the low point.
The stumble at full power could have been a carb bowl gasket leaking. I bet your attention to the carbs will solve the problem.
Kevin
On Oct 4, 2012, at 11:29 AM, "Jerry Rehn" <rehn(at)rockisland.com (rehn(at)rockisland.com)> wrote:
[quote]
I purchased this mod sometime ago and have yet to install it. I have not had any issues until lately, I think. I did not like the idea of adding more fittings and complications to the fuel system not to mention it looks like a pain to do! So I am looking for two things. How many are experiencing water in their Fuel and what kind of fuel? And those of you that have installed the Mod, how tough was it and have you found water?
Regarding my issue, I fueled up with 6 gallons I now know has up to 10% ethanol on top of about 6 gallons not sure about alcohol .In the past my fuel has been alcohol free, so maybe this has drawn in some water. Plane sat for ten days, no rain but humid. Started great, warmed up, ran mag check, fine, went to take off and engine stumbled badly as I approached full throttle thinking the water if any started moving forward to tank outlets. Backed off and ran fine again, did the same a second time, had enough, taxied back running fine. Have since raised tail to get any possible water to drain forward and pumped out 4 gallons, no water. However I may have run all the water through. I checked the turbo and all looks well.
I have checked fuel flow and filter all fine. I ordered a bing overhaul kit and have the carbs dismantled, so far they look good. Should have everything back together by weekend unless I tackle mod 33 so would like advice there. I am thinking water is the prime suspect. I will have the carbs totally apart in a few hours so will be able to rule these in or out. I have had over ten years of “sewing machine” fine running engine so this is not fun! Thank you for help and advice.
Jerry
914 XS Mono
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ptag.dev(at)tiscali.co.uk
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| Posted: Thu Oct 04, 2012 10:53 am Post subject: Mod 33 Water drains |
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Hi! Jerry,
I have the water drain mod. But I have curled the water pick ups to be at the front corner of the tanks since my aircraft is now permanently a trike. I have had instances of considerable amounts of water coming out of the drains but mostly since before I used duck tape on the key hole on the lockable fuel cap., None since. I also have two mini cascolators in each fuel line from the tank before the electric pumps and one way valves. I also have a removable access hole in the tank top for my fuel gauge sender into which I can get my arm to do an annual mop out and generally find some in there. I have also had problems with the finger filters catching fibres from wipe out cloths. This access hole allows careful positioning of the water pick up pipes on to the floor of the tank.
Regards
Bob Harrison G-PTAG
From: owner-europa-list-server(at)matronics.com [mailto:owner-europa-list-server(at)matronics.com] On Behalf Of Jerry Rehn
Sent: 04 October 2012 18:29
To: europa-list(at)matronics.com
Subject: Mod 33 Water drains
I purchased this mod sometime ago and have yet to install it. I have not had any issues until lately, I think. I did not like the idea of adding more fittings and complications to the fuel system not to mention it looks like a pain to do! So I am looking for two things. How many are experiencing water in their Fuel and what kind of fuel? And those of you that have installed the Mod, how tough was it and have you found water?
Regarding my issue, I fueled up with 6 gallons I now know has up to 10% ethanol on top of about 6 gallons not sure about alcohol .In the past my fuel has been alcohol free, so maybe this has drawn in some water. Plane sat for ten days, no rain but humid. Started great, warmed up, ran mag check, fine, went to take off and engine stumbled badly as I approached full throttle thinking the water if any started moving forward to tank outlets. Backed off and ran fine again, did the same a second time, had enough, taxied back running fine. Have since raised tail to get any possible water to drain forward and pumped out 4 gallons, no water. However I may have run all the water through. I checked the turbo and all looks well.
I have checked fuel flow and filter all fine. I ordered a bing overhaul kit and have the carbs dismantled, so far they look good. Should have everything back together by weekend unless I tackle mod 33 so would like advice there. I am thinking water is the prime suspect. I will have the carbs totally apart in a few hours so will be able to rule these in or out. I have had over ten years of “sewing machine” fine running engine so this is not fun! Thank you for help and advice.
Jerry
914 XS Mono | Quote: | | http://www.matronics.com/Navigator?Europa-List |
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[quote][b]
| | - The Matronics Europa-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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frans(at)privatepilots.nl
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| Posted: Thu Oct 04, 2012 11:20 am Post subject: Mod 33 Water drains |
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On 10/04/2012 07:29 PM, Jerry Rehn wrote:
| Quote: | I purchased this mod sometime ago and have yet to install it. I have not
had any issues until lately, I think. I did not like the idea of adding
more fittings and complications to the fuel system not to mention it
looks like a pain to do! So I am looking for two things. How many are
experiencing water in their Fuel and what kind of fuel? And those of you
that have installed the Mod, how tough was it and have you found water?
|
I have this mod since the beginning and I'm planning to take it out.
Never found any water in the fuel, despite having had the airplane
parked in heavy rain, in the mountains with huge temperature differences
between day and night (so plenty of volume changes and potential for
condensation against the tank walls). I tank ethanol fuel and avgas, but
never a single drop of water with both fuel types. At the same time the
fuel drains are another complication of the fuel system with a potential
for leaks. If you would ever be in a forced landing situation and the
landing gear would collapse, the fuel drains will drag over the surface,
shear off as well and you have the combination of sparks and a
non-closable fuel leak. Not good. So, I regret having installed this mod
and I will undo it at the next major fuel system maintenance.
Frans
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