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Fuel pressure readings OK ?

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Old 05-08-2007, 08:48 PM
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Fuel pressure readings OK ?

I bought a Vulcan mechanical fuel gauge, connected to my Schrader valve and I get 9lbs at idle and 4lbs at WOT then climbs a little.
At 70mph I have 7lbs, 80mph 6.5lbs

Truck has in-tank pump. Are these readings ok ?

I usually see people having 14lbs or more at idle and they get alarmed if it drops below 7lbs.
Old 05-08-2007, 08:56 PM
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Those are ok readings for the intake pump, actually better than most are seeing.

The 14 at idle readings are from the engine mount OEM pump.


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Old 05-08-2007, 10:50 PM
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Those are normal reading for in tank pumps, but that is not ok, anything below 8lbs is not good
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