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Go Back   Dodge Cummins Diesel Forum > 6.7 Liter Cummins > 6.7L Powertrain
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6.7L Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine, Transmission, etc...NO ADVERTISING

 


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Old 11-07-2009, 03:36 PM   #1 (permalink)
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07.5 rough Idle

I have noticed lately that my truck is idling a little rougher than it used to. Im running sw5. I changed my fuel filter not too long ago. Its not a horrible vibration but it is noticable a light with it in gear. Anyone had this problem?
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Old 11-07-2009, 03:44 PM   #2 (permalink)
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All the time or only when the engine is cold?
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Old 11-07-2009, 03:54 PM   #3 (permalink)
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Quote:
Originally Posted by ant.foste View Post
All the time or only when the engine is cold?
seems to be all the time.
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Old 11-07-2009, 05:55 PM   #4 (permalink)
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Yup engine is breaking in.. Check and clean all sensors, check boots on the intake and look for stuff thats not correct. Other than that its a diesel so its not gona idle like a porche.
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Old 11-07-2009, 06:45 PM   #5 (permalink)
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About a year ago my 6.7 starting idling a little rougher than normal and I poured 8 oz of Diesel Kleen in the tank at next fillup and the difference was noticeable. You might try that...certainly can't hurt.
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Old 11-07-2009, 10:21 PM   #6 (permalink)
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I've noticed slightly more idle vibration in SW5 on the shop truck. Might be a bit of timing difference in that software level.
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