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

fuel pressure gauge going crazy

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Old 11-24-2011, 08:29 PM
mike12v!'s Avatar
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Default fuel pressure gauge going crazy
I have a fuel pressure gauge on my 12v and it will bounce from 10 to 4 to 32 psi my truck runs perfect just gauge reading weird?
 
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Old 11-24-2011, 08:33 PM
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If you have a fuel gauge you usually need the snubber valve that attaches, to dampen the fuel pressure because otherwise it does exactly what you're describing, bouncing all over the place.
 
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Old 11-25-2011, 05:54 PM
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I've got one
 
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