Engine quit

by Robert J. Dean in General Tech Discussion 5 years ago

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Re: Engine quit

by Robert J. Dean » 5 years ago

Robert J. Dean

11 20 0

Thank you for all of the responses.

I was not the pilot that was operating the aircraft when this happened. I talked to him about it some more today. He also said that he could smell fuel in the cockpit on the ground and in the air.
I have had that problem before. The floats in the carburetor were bad.

If in fact, the floats are bad, could this cause this problem also?

Thank you,

Bob

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Re: Engine quit

by Robert J. Dean » 5 years ago

Robert J. Dean

11 20 0

Thank you for all of the responses.

I was not the pilot that was operating the aircraft when this happened. I talked to him about it some more today. He also said that he could smell fuel in the cockpit on the ground and in the air.
I have had that problem before. The floats in the carburetor were bad.

If in fact, the floats are bad, could this cause this problem also?

Thank you,

Bob

Report
Re: Engine quit

by David HEAL » 5 years ago

David HEAL

23 189 423

Based on my 750 hours of 912ULS experience in my RV-12, I offer the following non-professional observations:
-- It seems unlikely to me that over-weight floats would cause a sudden total engine stoppage.
-- At high-power settings, my engine does not appear to be significantly impaired by over-weight floats. I suspect that the high-power fuel flow through the carbs somewhat masks the poorly performing over-weight floats.
-- My first sign of over-weight floats is typically a whiff of fuel smell during climb-out, slight roughness at low-power settings (rough idle), and some signs of fuel residue at the end of the carb vent lines.
-- I suspect that you might have experienced some vapor lock/cavitation combined with slightly old summer/winter fuel.

Thank you said by: Robert J. Dean

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Re: Engine quit

by Dennis Richardson » 5 years ago

Dennis Richardson

1 153 169

So typical of a heat soaked system, do you have a fuel bypass?

Thank you said by: Robert J. Dean

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Re: Engine quit

by David HEAL » 5 years ago

David HEAL

23 189 423

If the OP has a stock RV-12 / 912ULS as he stated, he has a fuel bypass system that returns fuel from the carbs' manifold back to the fuel tank.

Thank you said by: Robert J. Dean

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