I am wondering if anyone has had the same problem. I am a tech at an independent shop and was recently given a 1999 Kis Sportage. I hardly runs. It was at another shop where they replaced the coils, plugs, wires, and timing belt. I have good fuel pressure. I am getting white smoke and a hard misfire on number 3 code(PO303). I have gone back over the vehicle to check their work. Timing is right on. I suspect an injector problem. I ran 2 cans of injector cleaner and the truck ran great. But after sitting for a week now runs like crap again. I have pulled the injectors and sent them out to be flow tested and cleaned. They all checked the same at 16.6 ohms spec is 13.8. So I am now waiting to hear word on the injectors. I have had 3 other sportages with simular problems. I cleaned the injectors and all turned out great. Has anyone else had problems with injectors? Is there anywhere else I should look?