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Old 08-29-2002, 06:57 PM
P.E.Haiges P.E.Haiges is offline
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Join Date: Jan 2000
Location: PA
Posts: 5,440
Air in the inline filter is normal. If the filter wasn't transparent, you would never know it had air inside and you wouldn't worry about it. If any of the air should be pushed or sucked into the secondary (can type) filter, it will escape thru the air bleed hole and return to the fuel tank.

Technically, the fuel in the filter is not put there by gravity. It is pushed there by atmospheric pressure when the fuel pump applies a suction (pressure less than atmospheric pressure) to the pump side of the filter. I will admit though, that atmospheric pressure is created by gravity so in an around about way, the fuel is put into the inline filter by gravity.

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