Cummins Cold Smoke

T

toh4od

Diesel Power Fan
Joined
Sep 23, 2011
Messages
24
Anyone have a cold smoking problem? 2013 Ram 2500 Ram 6.7 full exahust and egr delete running the latest Bullydog tunes with the 40428 tuner. I expected to see a little more cold smoke after exhaust was changed but on any morning near freezing upon startup, as soon as the engine climbs up to fast idle the blueish smoke fogs out. It slightly hazes at 1100 rpm but if the cruise is used to idle up or is driven around 1500 - 1600 rpm the smoke is embarrasing. It will actually sound like its missing for a short time. As soon as it warms to around 55*C it cleans up. No codes with tested intake heater, injectors, lift pump, compression, has changed nothing. The truck pulls occassionally but not a lot. All modules have latest software and all sensor voltages including rail pressure look normal. Any suggestions?
 
Mine hazes slightly when cold and on winter fuel. I think it's a combo of both these things together causing the blue smoke. For me it goes away once the cylinders are hot. Mine is deleted with EFI Live.
 
Losing a cylinder! White smoke =fuel, Blue smoke =oil. Seen it before the EGR will destroy an engine in under 100k! There's probably a score in the cylinder wall. Cummins really screwed these engines up with all the smog crap!
 
dangerous06 said:
. Cummins really screwed these engines up with all the smog crap!
Click to expand...

The environmental protection agency screwed up these engines. Not Cummins.


OP. If the engine has a bad cylinder, you'll see oil consumption go up. If it's not using oil, I'd not worry too much about a bad cylinder.
 
All cylinders shoot close temps with a gun. No history of oil consumption what so ever. The smoke does not smell like oil - burns the eyes and stinks like fuel.
Any other ideas?
 
It's normal unfortunately with the 2013+ engines, contact bullydog and see if they can send you a tune with a timing curve better suited for cold weather. Local EFILIVE tuner has spent time on this and had gotten it much better but not all eliminated


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Good to know. A little more advance on the timing seems logical to clean it up. I will check into that. Thanks for the tip.
 
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