1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

idle is too high

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Old Sep 9, 2009 | 01:27 PM
  #1  
cumminskid92's Avatar
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Default idle is too high

ok so i pretty much have my pump maxed out on all the adjustments but now it idles way too high and i have the idle screw backed all the way out. i know there is another way to get to idle down i just dont know how. can someone please help me.
 
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Old Sep 9, 2009 | 01:51 PM
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2500HeavyDuty's Avatar
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does this help?

https://www.dieselbombers.com/1st-ge...-pump-you.html
 
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Old Sep 9, 2009 | 05:39 PM
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You might have to grind some of teh lever away.

Read through here to see how I adjusted my idle.
 
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Old Sep 9, 2009 | 07:22 PM
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big bad diesel 416's Avatar
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did you re-index the linkage?
 
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Old Sep 9, 2009 | 07:25 PM
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My lever on my 4bt has a trun down that cant be ground down.the only other possibility is readjusting the throttle shaft on the splines.Rotate the lever counter clockwise 1 spline.youll probably have to turn thef uel up some more though.
 
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