hey, coincedently i am getting this same issue, only 1 wire poped out. i am getting a spark to it, i can smell gas...but i dont see any liquid inside it. i think the spark plug may be lose, it maked a compression sound ie ... PUH PUH PUH PUH PUH and when you rev the engine it goes quicker...PUHPUHPUHPUPHPUPH...and so forth. ive manged to get the spark wire back on and working, but im afriad it might pop off again...also the check engine like came on