Quoted from TecumsehPlissken:I have noticed that when playing my secret service Sometimes I hear a car engine revving sound when I pull back the plunger and other times not ? I can play several games where it makes the sound and then it just doesn't make it anymore another time I play it ? Anyone else's game make that sound when plunger is pulled back ?
I love that sound and often times I short plunge the ball barely off the lane switch to roll back and repeat it. The sound repeats only three times doing it in this manner so I hard plunge the 4th time into the game as its all revved up. LOL
I can do this each time with balls 1,2 and 3.
The only time the sound is missing is if I plunge the ball too quickly. Seemingly the ball needs to rest on the switch but only for half a second or so. Also, no sound on the free ball I get from draining too quickly.
I hope this helps. It's a great game.