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JetPilot
Joined: 10 Jan 2006
Posts: 1246
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 Posted: Tue Jan 09, 2007 3:43 pm Post subject: Fuel Bubbles caused by Fuel Filter, Which filter do you use? |
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I am having intermittent fuel bubbles that I think are being caused by my fuel filter. Attached are two pictures, the first shows the lines with no bubbles, but the filter always runs with just a little fuel in the bottom. Picture #2 shows the bubbles that intermittently go out of the filter, there are lots of them and they are big. I never see bubbles in the intake to the filter... The hose fittings to the filter are perfect, and I beleive the air is comming from around the large part of the filter where the joint is.
I like this clear filter that lets me see what is going on, but it if is cheap and prone to leaks I will switch to another type. What filters do you guys like to use for the 912-S ?
Mike Bigelow
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| Fuel lines with Bubbles :( |
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_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!
Kolb MK-III Xtra, 912-S |
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Tue Jan 09, 2007 4:06 pm Post subject: Fuel Bubbles caused by Fuel Filter, Which filter do you use? |
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Any way you can mount the filter so that no air can collect in it? Like
have the inlet side to the bottom, and the outlet side at the top? And then
see what happens?
Richard Pike
MKIII N420P (420Poops)
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Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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JetPilot
Joined: 10 Jan 2006
Posts: 1246
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| Posted: Thu Jan 11, 2007 5:46 pm Post subject: Re: Fuel Bubbles caused by Fuel Filter, Which filter do you |
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I could try turning the filter on end. I am really wondering if the bubbles are being cuased by a leak in the seam of filter itself, or if its just vapor being drawn out from the gasoline as the fuel pump is above the filter. I have read several cases in the archives about filters running with air in them, but I dont know if they were running 90 % air inside them like mine is.
EGT's are good, and the engine has never shown any signs of being lean... If there is a problem, I dont want to wait until the engine quits to figure it out !
Michael A. Bigelow
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"NO FEAR" - If you have no fear you did not go as fast as you could have !!!
Kolb MK-III Xtra, 912-S |
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Arksey(at)aol.com
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| Posted: Fri Jan 12, 2007 9:29 pm Post subject: Fuel Bubbles caused by Fuel Filter, Which filter do you use? |
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hi michael,
attended a seminar today at the sport expo in sebring on rotax 2 cyle....they recommend wire mesh filter rather than paper.....also wonder how you are coming on hks installlation.....
jim swan firestar ll 503 michigan...florida for winter.
[quote][b]
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