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Old 09-25-2022, 03:24 PM
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Kenth Kenth is offline
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Join Date: Feb 2003
Location: The Kingdom of Sweden
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There is NO suction going on in a mech fuel pump.
The pump creates a vacuum on the tank side of the membran and s pressure on the carb side.
Technically speaking it's atmospheric pressure that pushes the fuel from the tank to the pump.

FWIW

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