Excessive black smoke from diesels means ????
I guess I thought that heavy black smoke from diesels was from over fueling the pump?? but I am not real sure.I am looking at an 06 duramax crewcab with 300,000 miles, and it runs awesome and idles wi...
Forum Discussion
Gemstone wrote:
When I was in mile high Denver for a summer season, my Dodge Cummins started to smoke so bad I took it in fearing injectors were bad. Took it to an independent shop, they found nothing wrong (a "stealer" would have claimed the injectors needed to be replaced). Once I returned to sea level the smoke stopped.....and I always heard that elevation made no difference to a diesel. And the engine was chipped at 20K, I now have just shy of 200K, with no issues, and the original injectors....that said, I too would suggest looking for a truck with less than 300K miles.
Regards
Gemstone
Yep. Unfortunately diesel engines are not exempt to the laws of physics. Modern engines can correct some for this with variable geometry turbochargers, wastegates, and so on. But only to a point. A little black haze is normal to see during heavy throttle applications at high altitude, especially when it's warm outside (which lowers the air density even futher).
