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Start at the wing tanks
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The Cessna 172S stores fuel in the inboard part of each wing. The tanks sit above the cabin, so gravity starts the fuel moving toward the selector and the reservoir below.
A tank can contain fuel without the engine receiving it. The selected supply, the delivery path and the condition of the system all matter. This lesson follows one specific fuel-injected airplane; another model may use a different layout.
Fuel on board is the starting point. Delivery to the engine is the complete story.
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Private Pilot Course with Written Prep and the study guide.
