97 exhaust smoke
i have a 1997 f250 wit a 7.3. i bought the truck with 277,000 miles on it, and have had to do very little to the engine, except a few sensors which were replaced preventatively. the truck is now at 307k, and as far as i can tell, seems to be running relatively strong. but one thing i've always wondered about, any other diesel ive run, if you rev up the engine repeatedly, or put a load on it and push it to go, the engine will smoke a little. i have never once seen this truck puff any black smoke out whether it was pulling a load or normal driving. im not complaining about it, i am merely wondering if this is normal engine behavior, especially at 300,000 miles.