Question about 2007 Dodge Ram 3500 Quad Cab Laramie
Most diesels will smmoke white on startup in cold weather. White smoke like this is usually just unburned fuel coming out the exhaust. Big trucks often have trouble starting in cold weather and will smoke and misfire like crazy for a minute or so on startup. As long as it goes away within a minute or so, it shouldn't be a problem. I'm not sure if that Cummins uses glow plugs or not -- if it does, you may have a problem with them not preheating sufficiently for a clean start. Even so, that wouldn't be a real crisis unless you start to have trouble starting it.
Posted on Nov 18, 2009
'07 cummins engines are not to smoke at all. Cold, hot or upside down. If its smokin, its broken is the motto. '07 's are common rail fuel systems. I think you may have the DPF and the DOC exhaust system needs looked at. If no codes, have the dealer double check with ENSITE or comparable programs to check the engines crank and cam possitiion sensors to make sure they have the same rpm. you could have one going out. If just at startup you have smoke, may just be valve seals leaking. Good luck hope this helped.
by the way unburned fuel is black not white, thats oil...
Posted on Dec 02, 2009
Check Air Filter or if fuel mixed with water/eny lquid
Posted on Nov 18, 2009
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Posted on Jan 02, 2017
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