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

afc housing

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Old 01-22-2010, 11:31 AM
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Default afc housing

ok. new to diesels but learning fast. wanting to know some specifics on tuning the afc. i know hw to adjust the starwheel and fuel plate but caan the actual afc housing be moved also?
 
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Old 01-22-2010, 11:43 AM
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YES I HAVE A COVER UP PLATE IF U WANT
 
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Old 01-22-2010, 11:49 AM
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what exactly does a cover plate do?
 
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Old 01-22-2010, 12:01 PM
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This helped me alot with tuning the afc

https://www.dieselbombers.com/attach...adjustment.pdf

 
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Old 01-22-2010, 12:04 PM
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you can push the housing foward but the true way of afc tuning is with a tuning kit it has several different springs in it to get it just right
 
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Old 01-22-2010, 12:41 PM
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what do u get when u slide the housing forward and turn starwheel towards motor? i dont mind seein it smoke so thats no issue. i also have all gauges to monitor my temps.

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and the smoke screw? do i want to turn it in for more fuel or turn it out?
 

Last edited by 94_12_Valve; 01-22-2010 at 12:41 PM. Reason: Automerged Doublepost
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Old 01-22-2010, 02:23 PM
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in for more fuel. liding the afc will give you more fuel and so will the starwheel.

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what is done to ur truck? the stock trans wont hold much if its auto.
 

Last edited by monster12valve; 01-22-2010 at 02:23 PM. Reason: Automerged Doublepost
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Old 01-22-2010, 02:34 PM
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I doubt he'll damage his transmission by tuning the AFC . Anyway, the cover plate hunter is talking about just gets rid of the AFC housing all together. Makes changing out plates easier, and dumps the max amount of pre-boost fuel if I'm not mistaken.
 
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Old 01-22-2010, 02:52 PM
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Originally Posted by 9412Valve
I doubt he'll damage his transmission by tuning the AFC . Anyway, the cover plate hunter is talking about just gets rid of the AFC housing all together. Makes changing out plates easier, and dumps the max amount of pre-boost fuel if I'm not mistaken.
thats what it does ... but max pre boost fuel is useless it will just blow tons of smoke and go no where.

use the search function on here there was a good write up with pics done not too long ago

on a side note 94 12valve has to be one heck of a good name I think 3 others have it
 
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Old 01-22-2010, 02:55 PM
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