"COKED UP"
Anyone ever hear of a turbo getting ("coked up" dealer term)? I lost a lot of power and massive drop in MPG while towing to Co. Took truck 2012 3500 drw dodge to dealer and they had it for 3 days. ...
Forum Discussion
ScottG wrote:
Two very different things are being discussed here...
"Coking" is caused by shutting down a turbo (gas or diesel) that is extremely hot and has not been allowed to cool. When this happens the oil inside the turbo's oil gallery is heated to the point it turns to a solid. This blocks off further flow resulting in a damaged bearing and poor turbo action.
It has nothing to do with short trips, not driving it hard enough, too hard or anything but hot shut down. It also has nothing to do with carbon build up inside the turbo. That is a totally different subject.
It is certainly not a "Dodge" or Cummins thing. In fact it is extremely rare in those.
It certainly is a cummings thing and the dealer is certainly using the wrong term "coking" because you would not flush a turbo for a coking problem. Cummins added a cleaning port to the turbo because of this issue.
I'm sure it's the soot clogging issue that happens on a lot of first gen 6.7 cummins and there a flush kit used to clean out the turbo.
The problem here is this cleaning is a short term fix and the turbo will soot up again.
