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

Modifying my AFC

Old Nov 14, 2010 | 12:31 AM
  #11  
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have you tried moving the housing itself forward yet?
 
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Old Nov 14, 2010 | 12:57 AM
  #12  
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yeah I've tried it forward and in the middle, maybe just keep turning in the smoke screw?
 
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Old Nov 14, 2010 | 08:14 AM
  #13  
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It seems to me that you need to move your plate. A lot of AFC mods don't really do anything if the plate is still in the stock location.
 
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Old Nov 14, 2010 | 09:41 AM
  #14  
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Dude just put the damn plate all the way forward and be done with it (and dont fry your auto/clutch)
 
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Old Nov 14, 2010 | 11:56 AM
  #15  
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The AFC controls the rate at which fuel is delivered, lowering spring pressure will bring the fuel in earlier, as will inceasing the starting position of the off idle adjustment(smoke screw). If you are not altering the rack stop(plate), you will not increase hp or delivered fuel quantity.
 
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Old Nov 14, 2010 | 06:32 PM
  #16  
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Have you messed with the star wheel at all? or is that what you referring as the smoke screw?
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Just remove the plate completely once and see how you like it. But keep a eye on the egts if you on the go pedal
 

Last edited by bulldog77; Nov 14, 2010 at 06:36 PM.
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Old Nov 14, 2010 | 06:49 PM
  #17  
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Okay I moved the #11 plate all forward. I adjusted the smoke screw to where I'm getting just a haze of smoke until about 6-7 psi.
I adjusted the star wheel as far out as I could and still cannot get even a haze of smoke after 6psi. My boost seems to start slowly climbing at 1500rpm and finally hits 30psi(which is where I set it) at about 2300 rpm. Everything sound right or no?
 
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Old Nov 14, 2010 | 06:56 PM
  #18  
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Seems like your boost is coming in high? It's been a minute since i've had my cummins, but I thought that boost came in hard right around 21-2200 rpms?
 
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Old Nov 14, 2010 | 07:02 PM
  #19  
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Turn star wheel all the way in towards the front of the motor and start to turn it back towards the cab till its where you like it.
 
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Old Nov 14, 2010 | 08:26 PM
  #20  
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i didnt cut my foot i cut the barrel. anyways where did u move your starwheel too? did u adjust ur plate forward? afc ff?
 
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