12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

PRESSURE FROM MECHANICAL FUEL PUMP

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Old Mar 28, 2015 | 10:06 AM
  #1  
MREILLY's Avatar
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Default PRESSURE FROM MECHANICAL FUEL PUMP

MY TRUCK IS A 98 12V AND I HAD GAUGES INSTALLED . ONE OF THE GAUGES IS FOR FUEL PRESSURE. WHEN I START I GET 4 TO 7 PSI? , HOWEVER WHEN UNDER LOAD 1 TO 2 AND WHEN UP HILL THE GAUGE WILL ZERO OUT AND EVEN GO NEGATIVE. SHOULD I JUST IGNORE THE GAUGE, INSTALL A NEW MECHANICAL ONE, PUT BOOSTER ELECTRIC OR JUST INSTALL A NEW ELECTRIC ELECTRIC ONE AND BY PASS THE MECHANICAL ONE.
* THE BUILD DATE ON THIS TRUCK WAS DEC 97, I THINK ITS ONE OF THE LAST OF THE 12 V. THANKS. WOULD APPRECIATE ANY COMMENTS
 
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Old Mar 28, 2015 | 10:52 AM
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WHY ARE WE YELLING?!
 
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Old Apr 8, 2015 | 01:27 PM
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Please re-frame from all caps, thanks. Is the pressure reading coming from before or after the fuel filter?
 
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