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

blue smoke

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Old Sep 26, 2012 | 06:03 AM
  #1  
98 Cummins's Avatar
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Default blue smoke

Hey,

I have been having this issue for a few weeks now, my truck smokes blueish hase when cold at idle, and when it's warm it will only do it on take off, weather I have a load or not. So yesterday we checked the timing and everything was right @ 16* advanced as I had them set with my Marine injectors. Pop-tested my injectors 2 of them were low, so I installed DDP 90hp sticks in it. And this morning on my way to work I noticed that it was still hazing on tack off from stops & street lights.

What could be causing this? any input will help.

Thanks

Corb
 
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Old Sep 27, 2012 | 08:22 AM
  #2  
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Could this be caused by the smoke screw? if there's a little to much fuel it could cause a haze initially when you give her fuel. When she's running idle you can smell diesel.

Could be a possibility.

Corb
 
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Old Sep 27, 2012 | 03:56 PM
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correct me if im wrong but I was told white smoke on start up means your timing might be off.. but blue smoke is just burning oil, normaly caused by craped out valve seals... once again im just saying not KNWOING!! let us know how you make out
 
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Old Oct 3, 2012 | 06:35 AM
  #4  
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Did a leak test threw the turbo, found that I had a torn boot before the intercooler, and this morning it still puffs blue when you take off from a stop sign or street light. Could it be a valve adjust, or valve seals? or head gasket causing this?

Everything else seems to be perfect. The exhaust smells like diesel, there's no oil smell comming out. I am stumped... don't know where to go from here.

Any help is greatly appreciated.

Thanks

Corb
 
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Old Oct 10, 2012 | 07:19 AM
  #5  
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Valve seals have been changed and still the same. Puffs a blueish haze on take off. Going to keep in investigating what else it could be.

I guess we will check puff limiter, AFC again. No clue what it could be at this point.

Corb
 
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