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#1
May 8th 05, 03:02 AM
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Engine driven fuel pump necessary with gravity feed tank?? Lycoming
Situation with experimental airplane:
Gravity feed tank with Lyc IO320B1A fuel injected engine. Gravity free fuel flow is greater than 20 gph and the engine burns 15 gph at full throttle take off. Cruse fuel flow 7.5 to 8 gph. I want to test the engine without the engine driven fuel pump as I feel it is not a necessary item. For start priming the engine I use an electric fuel pump (Dukes). Any one have knowledge of this situation? Perhaps the fuel injected engine needs the fuel pressure All comments welcome.........thanks 
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