Turning up a p7100 fuel pump - Diesel Bombers



5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

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Old 05-26-2008, 07:48 PM
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Default Turning up a p7100 fuel pump

One of my friends told me that he turned up the fuel screw on his 12valve and I was just wondering if anybody knew how to do that because I have no idea. Does anybody know where the fuel screw is?
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Old 05-26-2008, 07:55 PM
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there is no fuel screw on a p-pump that came in 94-98 trucks. here is alot of info on the p-7100 pump. https://www.dieselbombers.com/5-9l-1...-12-valve.html

there is a fuel screw on the VE pumps in the pre-94 trucks. here is alot of useful information on the VE pumps https://www.dieselbombers.com/1st-ge...-pump-you.html
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Old 05-26-2008, 07:56 PM
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oh ya


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Old 12-07-2008, 07:00 PM
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No fuel screw on the P7100?
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Old 12-07-2008, 09:20 PM
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nope fuel plate
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Old 12-08-2008, 11:58 AM
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maybe he means the star wheel?
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Old 12-08-2008, 12:42 PM
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There is a screw on the back of the afc housing, commonly referred to as the "smoke screw". It's basically another fine-tuning adjustment as to when you bring the fuel on, in relation to boost. That's the only one I'm aware of.
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Old 03-29-2009, 05:23 PM
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The only way to turn the p7100 pump up that im aware of is to take the afc housing off and slide the fuel plate forward and loosen the star wheel and slide the afc housing forward and plug off the turbo wastgate
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Old 03-30-2009, 11:23 AM
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Quote:
Originally Posted by cummins2500 View Post
The only way to turn the p7100 pump up that im aware of is to take the afc housing off and slide the fuel plate forward and loosen the star wheel and slide the afc housing forward and plug off the turbo wastgate
why would you want to plug the wastegate? a boost elbow is a way better choice. as for the pump there is also gov springs, mack plug, timing, dv's, and bigger dv's holders.
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Old 03-30-2009, 11:47 PM
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Lets just go all out Dave and say

you could always turn the barrels
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