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Guys with autometer fuel pressure gauges

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Old 08-06-2010, 12:20 AM
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I have a gauge for that
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Default Guys with autometer fuel pressure gauges
Have y'all tested it against a mechanical gauge on the rail? Brand new mech gauge reads 62, whereas my eletric autometer reads 48..... pretty big difference.
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Old 08-06-2010, 12:21 AM
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From what I can tell, electric fuel gauges SUCK.

They're rarely accurate.
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Old 08-06-2010, 12:23 AM
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I have a gauge for that
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I would like to know if they can accurately measure changes since pressure drop is what I am really concerned about, but its pretty hard to watch an underhood mech gauge while WOT.
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Old 08-06-2010, 12:23 AM
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my autometer cobalt reads a few psi lower than a mech gauge. only like 3-5psi
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Old 08-06-2010, 12:24 AM
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Put a manual gauge in the cab
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Old 08-06-2010, 12:27 AM
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Mine reads about like yours.
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Old 08-06-2010, 12:28 AM
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I have a gauge for that
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didnt a member here just have his truck burn to the ground?
ill pass on that idea, as long as im not going lean its really a mute point anyway
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Old 08-06-2010, 12:31 AM
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Originally Posted by Atomic
Have y'all tested it against a mechanical gauge on the rail? Brand new mech gauge reads 62, whereas my eletric autometer reads 48..... pretty big difference.
Maybe you have the incorrect sending unit for the Autometer gauge. I have seen this a few times. They are usually ink stamped with a pressure calibration. Make sure it matches your application.
Last edited by Mrgoodwrench3; 08-06-2010 at 10:22 AM.
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Old 08-06-2010, 12:33 AM
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I have a gauge for that
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hmmm, interesting thought. is it stamped on the gauge or sending unit?
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Old 08-06-2010, 12:39 AM
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Sending unit.
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