Anyone ever had a timing chain skip a tooth on a 3.0 vulcan. If so what did the engine run like? I still can figure out this driveability problem. I cant stand the non cold start. It was 30 degrees today and it still gave me troubles I adjust the curb idle base screw By the mitchell manuel and i thought it was a sure fix but i still get a backfiring noise and popping at idle there is a noticeable miss in the motor. When i replaced all the injectors this weekend i noticed i had a lot of fuel in the upper intake. I did port the up[per intake and gasket matched it. I don't think i screwed it up since i did this last summer and had no troubles till now EVERY SENSOR AND fuel injector is new most parts are form ford including all Filters