Other crossword clues for answer "SPARKPLUG"SPARKPLUGAdvertisement for Shenandoah and Sequoia?Tune-up itemTune-up supplyIgnition system deviceAuto tune-up itemPresentation on how to generate chemistry when matchmaking?Barney Google's nagEngine part.Barney Google's horseInitiator of actionComic-strip horseBarney Google's mountBarney Google's hoss