Rough idle / smoke
I stopped at a light today and felt (had the radio turned up) my truck idleing rough. By the time I turned the radio down it came out of it but I looked in the mirror and noticed a BIG puff of smoke. The whole thing lasted maybe 3 seconds and it never did it the rest of the day. The truck had been running for approximately 10 minutes at town speeds but was in a heated garage all night. Something going out? Injector?? Truck has 309,000 and is stock other than a mild tune. It has never left me standing in all the miles even through the cps and tranny issues I've had. I do a lot of long trips with it and would rather not be stranded in -20 degrees this winter. What could it be?? Thanks.
Last edited by floorboy; 11-19-2012 at 08:07 PM.