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Well, the head is pump to outlet once it has pulled it through; the downside subtracting from the upside. But if you can get a combo pump (like a Regina with both centrifugal and positive displacement) like Chuck suggests, you'd have a firehose instead of a lazy stream. Experience counts here, and I lack it, beyond using the tank pump in place to empty tanks.
By high vapor pressure I mean the air/fuel ratio is too rich for the brush to commutator sparks to ignite when the fuel level goes below the intake. In a car's fuel tank there is always enough fuel left to keep them from exploding. Even when it is not submerged.
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Art Benstein near Baltimore
SUCCESS:
At age 4 success is . . . not peeing in your pants.
At age 12 success is . . . having friends.
At age 16 success is . . . having a drivers license.
At age 20 success is . . . going all the way.
At age 35 success is . . . having money.
At age 50 success is . . . having money.
At age 60 success is . . . going all the way.
At age 70 success is . . . having a drivers license.
At age 75 success is . . . having friends.
At age 80 success is . . . not peeing in your pants.
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