Good morning everyone. I just joined this forum because I bought my first Duramax yesterday. It is a 2005 Crew Cab 4x4. I did a 30 minute test drive and everything went very well. After the purchase, I filled the truck up with fuel at the best station in town that was recommended by the dealer. I let the truck idle for about 2-3 minutes after filling it before I left and when I pulled out into the road, it hesitated like it didn't want to take off. About 5 seconds later, a large cloud of black smoke came out the tail pipe and it accelerated hard after that. I drove the truck for an hour after that on the hwy at 70 mph and had no issues. I got off the highway, parked and left it idling for about ten minutes to pick up some stanadyne injector cleaner at the local tractor supply. I put 8 oz in the full tank of fuel, and I pulled out in the road again after that and the truck did it worse this time. It took about 10 seconds for it to really pick up. From what I've seen so far this only happens when it idles for an extended period of time. Any ideas of what it could be? The exhaust looks clean when it's idling, I don't see any black smoke.
The dealer did say that they put a new fuel filter on it before I purchased it. The truck is 100% stock with 90K miles. Thanks for the help in advance!
The dealer did say that they put a new fuel filter on it before I purchased it. The truck is 100% stock with 90K miles. Thanks for the help in advance!
