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Evolution 10cc gx (not pumped carb) help needed

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Evolution 10cc gx (not pumped carb) help needed

Old 07-07-2023, 06:11 AM
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tcoffey59
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Angry Evolution 10cc gx (not pumped carb) help needed

Hi,
I have an evolution 10cc engine in my valiant 10cc and I can't get the engine to run correctly. The needles are set to factory setting and the engine cuts out if it has any downward angle to it. We tuned it and get great transitions and high speed with low idle but the second we point the plane downward the motor quits, no matter the setting.

Any ideas?


Old 07-08-2023, 03:24 AM
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jaka54
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Must be that it does not get fuel! How is the clunk line in the tank placed?
Old 07-08-2023, 11:49 AM
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tcoffey59
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Originally Posted by jaka54
Must be that it does not get fuel! How is the clunk line in the tank placed?
The line runs toward the back of the fuel tank and has a brass clunk. It is fully covered when the plane is tipped forward. The slightest tip forward causes the engine to stop as if it is flooding.
Old 07-10-2023, 10:18 AM
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speedracerntrixie
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The early non pumped versions were known for this, to my knowledge there is no fix.
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