smoke file messed up

I screwed up and installed the effects files for a recent aircraft download without saving the old files. This smoke begins when an engine starts and apparently doesn't differentiate between piston and turbine engines. It is totally out of scale creating big black spinning rectangles about 10 ft. in diameter. I've been trying to remove it from the effects directory and so far I have removed five or six files that contain the word smoke without any luck. Does anybody have any suggestions?