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HomeAircraftHelicopterMain Discussion › os 61 max sx heli engine problems
03-11-2015 12:09 AM  3 years agoPost 1
budget1970

rrNovice

Dorset

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Hi All thanks for your info on my last topic, can anyone answer me why my os 61 sx heli engine is now flooding? all the screws are wound in to the correct settings yet it floods.when I take out the plug and blow it out with my starter loads of fuel gets blown out I keep the starter on it until it's clear put my plug back in and it starts fine. I then leave the engine for 5 minutes un clip the fuel line clamp and go to start it and yet again the starter won't turn the engine over because for some reason unknown to me it's flooded again.

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03-11-2015 04:01 AM  3 years agoPost 2
Einzelganger

rrKey Veteran

Campbell, Texas

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I have no idea how fuel is running past your clamped fuel line. Wait.
Do you have muffler pressure going to your tank?........and if you do, are you sure your pressure line is at the top of the tank out of the fuel?
I bet your tank is siphoning back into your engine through the exhaust port.
Check your plumbing.

Wayne

I love the smell of nitro in the morning.
RIP Roman

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03-11-2015 04:10 AM  3 years agoPost 3
Einzelganger

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Campbell, Texas

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If that is not the case, Do you have a hopper tank?
If fuel is not coming in from the pressure line, there must be too much gravity or pressure feed of some type jamming into your carb in the short time between unclamping and starting. A hopper tank will be approximately on level with your carb spray bar and minimizes the chance to gravity feed the inlet.

Wayne

I love the smell of nitro in the morning.
RIP Roman

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