I hope that someone can help me with this problem. Today I was driving along at 65 mph, cruise control and A/C on. I noticed a “tinny” ticking sound that was different from normal. This went on for about 3 miles. I drove under an over-crossing on the freeway and the cruise control started to compensate for the incline. The truck seemed to be a little doggy. As it reached the top it sounded like someone was hitting a steel table with a hammer, about 3-4 hits. I saw in my rear view mirror a cloud of black smoke. After that it ran rough for about a mile. No warning lights came on and I slowed down and drove to the dealership that happened to be 2 miles from where it happened.

The tech with his Tech II computer could find no problems. Off I went to unload my purchases and to get the family. About 25 miles later my wife asked me if we were hearing the noise that I had described to her and I said it was. Soon I drove under an over-crossing and you guessed it, “Bang-Bang-Bang-Bang”, LARGE puff of black smoke. This time I called the dealer and brought it back to them to keep until they found the problem.

1) I was told bad fuel. They checked the fuel the first time.
2) Could be machining debris in the line/injector.
3) Could be software problem.
4) Could be Turbo vane solenoid.

Any ideas? Thanks in advance.

By the way, the odometer was at 995 miles when it first happened.

Bad injector............


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injector or lly we need more time and miles to see the true lly that we will come to love the only problem there are a few only a few of us in the nation finding the answers.