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

Dark grey smoke

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Old 01-31-2014, 11:18 PM
leakin 12 valve's Avatar
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Default Dark grey smoke

I recently replaced my lift pump with the crap O'reillys pump and noticed that my truck started blowing kind of dark grey smoke at an idle when I blipped the throttle. And wanted to know if any one else has had this issue. Also after only about a month of running that pump it's bad already just a heads up for people.
 
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Old 02-01-2014, 10:55 AM
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sounds like A LOW fuel pressure from the LP ... causing the injectors to dribble the fuel instead of having a nice even spray pattern .... happens frequently ..
 
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Old 02-01-2014, 02:04 PM
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Does anyone know of a good place to buy a lift pump from?
 
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Old 02-01-2014, 08:39 PM
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Given the newness of the lift pump do you think there is something further up the line is causing it like a clog in the in tank screen.

Sweetv8s10. I would guess straight from cummins that's were I plan on getting my next one.
 
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Old 02-02-2014, 11:02 AM
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I would make sure its a cardone reman .. i have not had manny issues with cardone's ... or buy a "New" one and take the hit .... cummins wants like 235 for a new pump here in Wa. ...
 
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