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

Sticking throttle! Not good!

Old Apr 30, 2012 | 09:53 PM
  #21  
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Originally Posted by ricet07
Aparently not! Some people just have to learn the hard way. Governor will hang with to much pressure on springs or too many shims.
Exactly or toast a cylinder. Ever think about the effects it has on timing? Lol

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Old Apr 30, 2012 | 10:04 PM
  #22  
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Originally Posted by mysterync
Exactly or toast a cylinder. Ever think about the effects it has on timing? Lol

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Shouldnt affect timing unless shims are changed. Rotating just increases total cc of fuel delivered. Still a good way to toast a cylinder or stress the eff out of the crank from unbalanced fueling. Good way to make a truck lope


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Old Apr 30, 2012 | 10:12 PM
  #23  
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Originally Posted by mysterync
If idle is ok governors generally wont cause a "hang". Also if governors hang the pedal feels normal. I think you should rebuild the linkage.

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Now when you say "linkage" what exactly are you referring to?
 
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Old Apr 30, 2012 | 10:44 PM
  #24  
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Originally Posted by tower_ofpower
Shouldnt affect timing unless shims are changed. Rotating just increases total cc of fuel delivered. Still a good way to toast a cylinder or stress the eff out of the crank from unbalanced fueling. Good way to make a truck lope


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I would think any increase in fueling on one cylinder would in some way shape or form effect the duration and therefore effect volume
injected into any given cylinder. By increasing or decreasing fuel you in turn either pop the injector sooner or later or hold it open a longer or shorter duration, while it may be nominal it must effect timing. My reasoning comes from the idea that the nozzle is limited to flow X amount per milliseconds of duration, therefore additional fuel injected would be by way of duration.
I may be way off on my thinking?




Originally Posted by 12VALVECOUNTRYBOY
Now when you say "linkage" what exactly are you referring to?
Im referring to the ball ends, cables, bell crank, and rods all need to be checked for any wear or loose movement. You can remove the cables and move the linkage through the travel, if it binds you know its between the bell crank and pump. If not it could be a cable but by design the cable returns by pulling the top of the pedal down and extending towards the front of the truck, meaning its more likely that a binding cable would cause acceleration issues. Like a tight pedal before it would cause it to "hang" the throttle open. It dosent mean it can't happens it just means usually you would know the throttle pedal wasn't working correctly before it hung up.


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Old May 1, 2012 | 08:44 AM
  #25  
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Originally Posted by mysterync
I would think any increase in fueling on one cylinder would in some way shape or form effect the duration and therefore effect volume
injected into any given cylinder. By increasing or decreasing fuel you in turn either pop the injector sooner or later or hold it open a longer or shorter duration, while it may be nominal it must effect timing. My reasoning comes from the idea that the nozzle is limited to flow X amount per milliseconds of duration, therefore additional fuel injected would be by way of duration.
I may be way off on my thinking?





Im referring to the ball ends, cables, bell crank, and rods all need to be checked for any wear or loose movement. You can remove the cables and move the linkage through the travel, if it binds you know its between the bell crank and pump. If not it could be a cable but by design the cable returns by pulling the top of the pedal down and extending towards the front of the truck, meaning its more likely that a binding cable would cause acceleration issues. Like a tight pedal before it would cause it to "hang" the throttle open. It dosent mean it can't happens it just means usually you would know the throttle pedal wasn't working correctly before it hung up.


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Nah, it sounds like you've got the right idea, BOI (timing) is supposed to be constant on a downward helix plunger. And as you stated the duration is affected from turning the barrels, not timing. That's all I was saying


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