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

Low Fuel Pressure

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Old 03-09-2012, 08:29 PM
12V98's Avatar
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Default Low Fuel Pressure

Ok guys. Need your help. So I recently had some starting issues...ended up replacing the overflow valve on the pump. Checked my fuel pressure after this and it is fine at idle, but drops as I put my foot into it with no load. Has new fuel filter. Any ideas?
 
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Old 03-09-2012, 08:54 PM
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You might try deleting the heater and installing a new screen. Sounds like a pump or restriction issue.

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