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Fuel Pressure Readings Eratic

815 views 1 reply 2 participants last post by  heavy metal 
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I have a fuel pressure gauge that is correctly hooked up to my fuel rail. Can anybody tell me why my readings are so eratic. By eratic I mean that even at a constant speed, the digital readout will continuously fluctuate between 27 to 33 psi. When I excelerate, the pressure readings go higher but the numbers still bounce around. Maybe this is normal, but I would think a more constant psi would be normal. I've had three meters ( auto-meter, cyberdyne, and presently a AEM). With all three meters the psi numbers bounced around. { It's not the bouncing numbers that made me go thru three meters} If there is anybody out there that knows why; please clue me in as it's driving me crazy.
 
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