5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

Update on: Rough Idle, but not when off idle

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Old 12-26-2014, 08:50 PM
cdetterer's Avatar
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Default Update on: Rough Idle, but not when off idle

So Where were at now. Took it to a shop, my injector flows were all over the place from 104%-89%.

What I have done to it so far is put:
60HP DragonFly Injectors all 6
New Fuel Filter
Valve Lash
CP3 Bag of parts with a new FCA
Ran 2 tanks of straight fuel and one with Diesel Clean

AND IT STILL HAS A ROUGH IDLE

Im not sure maybe crank and cam sensors or a throttle sensor?

Its not making oil or any measurable blow by

Also I dont know what the smell is when it is running but it stinks, and its not like raw diesel, Rotten Eggs, or bleach/chorine

Does anyone have any ideas?
 
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geatgavi (12-27-2014)
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Old 12-27-2014, 07:48 AM
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Might check your manifold for a crack
 
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geatgavi (12-27-2014)
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Old 12-31-2014, 07:25 PM
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is the smell like burning oil? if so, its the crankcase ventilation. as far as the rough idle goes,,,??? Let me give it some thought. Any codes? maybe sucking some air from a loose fitting? Keep us posted.
 
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Old 01-07-2015, 12:26 PM
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ive had a rough idle from a bad fca. i know you have a new one but how new? do you still have the old one? id try switching them. is the engine louder than normal when idleing? might watch rail pressue. what kind of fuel economy do you have and also what kind of programmer/chip?
 
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Old 01-21-2015, 10:47 AM
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I do have the FCA, I might see what it does switching back. The engine does seem a little louder I thought it was just me though. And It isnt chipped or tuned, besides what I have just done it is bone stock.
 
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