michael(at)wikstrom.cc
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 Posted: Mon Jul 25, 2011 1:15 pm Post subject: Yak-List: fuel flow from tanks |
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Good Evening
I some times have the problem in my 18T that it pulls more fuel from the left tank and I sometime end up with an empty left tank and a lot of fuel in the right one.
If I take care and watch the wing level and keep the ball in the center while cruising I manage to keep the tanks equal, but if I don’t pay attention, the left one will go
dry first.
Still not sure if this was the cause but I once returned from Corsica back to Cannes, at 8000 feet and I had my “left tank empty” lights on for a while
with the right one almost 90 liters.
At 22 miles off the coast of Cannes, I was advised of some IFR traffic for Nice Airport and I was asked to expedite to 1500 feet. I did a steep decent at 300km/hr
with gills closed etc.
When I leveled out at 1500 feet the engine had stopped, except for a wind milling prop. As I had my “empty tank lights” still in my head, I instinctively made a left 60 deg bank turn, to get the full fuel tank high up in the air, and at the same time hand pumping the cylinder side quite fast. I completed one turn and the engine came to life at about 1000 feet and I continued to Cannes without any more problems.
Some people said I had a carb ice problem and some, including me, think it was an air bubble that probably came from the left tank, maybe induced by the rapid decent.
Weather was good, outside temperature around 25 degC.
Carb heat was not on during the decent.
Since then, I watch my fuel levels much more and I will not have this happen again 22 miles from the coast. For about a minute I thought we were going to be swimming,
me, my wife and my dog…
Michael Wikstrom
La Colle sur Loup (06)
France
Tel : +33 607 44 40 11
email: michael(at)wikstrom.cc
Yak 18T - HA-YAI
Yak 3U - D-FAFL
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