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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Crazy stupid issue I should have found much sooner!
07-22-2006 02:54 AM  14 years ago
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ESWLFSE

rrElite Veteran

Liberty Hill, TX

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Crazy stupid issue I should have found much sooner!
This problem was masked by how slowly it came to be, the onslaught of summer heat, a governor sensor failure, and how infrequently I am able to fly. What I finally noticed was that I just couldn't get the engine rich enough any more despite cleaning the needles etc. The fact that my fuel pump didn't want to suck my tank dry any more either should have been a clue since it filled fine. I had been attributing this all mostly to the sudden temperature change.

So last time out I finally decided something was definitely wrong since my governor started hunting, my poor SZ was still getting hotter, and my needle was about to fall out. So today I backflushed my fuel filter and hovered in the back yard. No change. Finally I blew through my pressure line and got almost zilch out at the carb line.

I then found that my header pickup line had swelled and lengthened to the point where it was wedged into the corner of the tank. I noticed it also did not have the slot that you usually see on the end of a clunk and that prevents this occurrence from restricting fuel flow.

I am very aware of what is probably the most common problem with Raptors and that is the clunk line in the main tank swelling and breaking, but for some reason I never worried about the header.

I've read it here 100 times but I guess it can't be said enough. Check your clunk lines.
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07-22-2006 04:22 AM  14 years ago
tchavei

rrProfessor

Portugal

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Don't be too hard on yourself....try flying for 3 days with a loose radius block... now thats stupid. Guess how I know


Tony

--------------------
"Perfection and patience usually walk side by side..."
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