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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › YS 50 ST running stightly lean.
02-03-2013 10:50 PM  5 years agoPost 1
jespicer1

rrApprentice

memphis, tn

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Low speed needle is at almost 1 turn open.
High speed needle is around 1.5 turns.

It only leans out at high throttle even with the hi speed needle at almost 2 turns. I have a MP5 pipe on it.

Linx moas clunk with the Linx fuel line specified for it in the tank. I have good pressure in the tank. The one way valve is working properly and installed with the correct length fuel line.

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02-04-2013 12:39 AM  5 years agoPost 2
AmishKyle

rrNovice

South Jersey

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i had a very similar problem with mine, it turned out to be debris in the fuel system, cleaned the carb and regulator out with clean fuel, then install a filter and never had another problem. hope that helps

[quote] FB heli flyers will become the Amish community of r.c. helis lol[/quote]

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02-07-2013 10:55 PM  5 years agoPost 3
Zaneman007

rrElite Veteran

Texas - USA

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Pressure
Make sure that you're getting adequate pressure to your fuel tank.

I am having a similar issue. My problem is being caused by inadequate pressure in the fuel tank. I am getting ready to replace the one way valve and the diaphragm.

Old Guys Rule!

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02-07-2013 11:02 PM  5 years agoPost 4
jespicer1

rrApprentice

memphis, tn

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Tank pressure is good. I broke the engine down. It looked almost new inside. I am having trouble getting the fan hub off, so I have not had a chance to inspect the rear bearing yet. I suspect it to be the culprit of my issues.

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02-18-2013 12:59 AM  5 years agoPost 5
jespicer1

rrApprentice

memphis, tn

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New bearings and diaphragm installed. Runs great now.

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