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Thread: Leaking drain valve, or not?

  1. #1
    Pacer42Z's Avatar
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    Default Leaking drain valve, or not?

    I noticed what I thought my drain valve on the right main tank was leaking. So I flew the tank dry and changed the valve. Sure enough, I thought I had a bad brand new drain valve, because it leaked again. Flew the tank dry and put another new valve in. Wasn't leaking anymore I thought. However, I just didn't fill up the tank after I was flying. The first time I filled the tank before putting the Pacer back in the Hangar I came back and the drain valve was wet again.
    However, I just went flying and didn't top off the tank after I was done. Sure enough, no leak. I pulled the tank cover and found the screws on the fuel sender (especially the top two) very loose. There were also fuel stains (pictures attached). I tightened the screws and filled up the tank. No more leak. Next time you can't get that fuel drain to stop leaking, check further up. When you look at the fuel stains on the tank, it shows how far the fuel can travel.

    Juergen
    Pacer N3342Z
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  2. #2
    Stephen's Avatar
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    Default Re: Leaking drain valve, or not?

    Nice work.

    I have changed a number of valves with full tanks. I tapered a dowl to fit and slightly thread into the tank hole. Then, I losen the valve. With one hand I finish unscrewing the valve and quickly stick the wooden dowl in the hole and twist it a couple of times to hold. Then I repeat the process with a new valve. Wear rubber gloves although, I usually don't bother myself. It works. Anyone got a better idea?
    "You can only tie the record for flying low."

  3. #3
    Gilbert Pierce's Avatar
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    Default Re: Leaking drain valve, or not?

    I had the same problem. Thought it was drain valve and it to be the fuel sender gasket.

  4. #4
    Pacer42Z's Avatar
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    Default Re: Leaking drain valve, or not?

    Quote Originally Posted by Stephen View Post
    Nice work.

    I have changed a number of valves with full tanks. I tapered a dowl to fit and slightly thread into the tank hole. Then, I losen the valve. With one hand I finish unscrewing the valve and quickly stick the wooden dowl in the hole and twist it a couple of times to hold. Then I repeat the process with a new valve. Wear rubber gloves although, I usually don't bother myself. It works. Anyone got a better idea?
    I used to do it with fuel in the tank by wrapping rags around by wrists so the fuel wouldn't run down my elbows. Now I enjoy flying the Pacer until the engine quits on the tank that need a new valve. Then I drain the unusable fuel (about 1/4 of a gallon) and take the time to examine the threads and take the time to install the new valve.

    Juergen
    Pacer N3342Z

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