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

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Old Nov 14, 2010 | 11:02 PM
  #21  
joco12v's Avatar
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My starwheel is all the way forward, my afc is ff as well, and so is the fuel plate, so pretty much everything is full forward and I'm losing my smoke after 6psi
 
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Old Nov 15, 2010 | 09:00 AM
  #22  
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Your losing fuel pressure.
 
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Old Nov 15, 2010 | 01:06 PM
  #23  
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x2 on fuel pressure theres no way u shouldnt see big results with the right plate and everything forward.
 
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Old Nov 15, 2010 | 01:55 PM
  #24  
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When was your last fuel filter change? Did you clean the strainer? Simple places to start.
 
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Old Nov 15, 2010 | 09:10 PM
  #25  
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ALRIGHT I took the plate out now to see if I got more of a gain, trying to eliminate what could be wrong.
I am burning coal now under 6 psi(I'm going to adjust that smoke screw more now), my boost is way better now. Instead of hitting 30psi at 2300rpm, I was passing 30psi going to 40psi at 2000rpm, I had to let off the throttle obviously as I saw the gauge still climbing.
I'm going to make a boost controller tonight to hold my boost at 33ish.
Since the truck performed way better with the plate out compared to with the #11 ff, does that eliminate the fuel pressure possibility?
My fuel filter is new along with a new lifter pump
 
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Old Nov 15, 2010 | 09:17 PM
  #26  
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Imho, your fuel pressure is fine. I would still clean the prefilter screen or get a new one from cummins for like $8, dont go to dodge and get one, I think they want around $44 for one. Just keep a eye on the egts. The first time I pulled the plate I had stock sticks and stock timing and hit 1400* pretty easy.
 
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Old Nov 15, 2010 | 10:07 PM
  #27  
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You have revealed the issue, now to see how many people can tell you the cause.
 
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Old Nov 15, 2010 | 10:15 PM
  #28  
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Surprisingly I still only got my egt's up to 1000, maybe because I was letting off the throttle once it tried going beyond 30psi
 
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Old Nov 15, 2010 | 10:24 PM
  #29  
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Dude dont use a boost controller just get a damn boost elbow for $5
 
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Old Nov 15, 2010 | 11:11 PM
  #30  
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Originally Posted by 85_305
Dude dont use a boost controller just get a damn boost elbow for $5
u dont have to be a dick to him every reply u said u said it like he should have aready known to do it or he was stupid for not. im sure u were dumb at a point and timeand wanna learn somethin not sayin jayco is dumb but was wantin to learn about stuff. im not bein a dick but just read or think about not wat u say but about how u say it to somebody. have a good day!
 
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