
Sorry, I need to work on this ENGINE,
The Big Bang Theory Season 10, Episode 15

...of an internal-combustion ENGINE...
The Big Bang Theory Season 2, Episode 5

I rebuilt a tractor ENGINE
when I was, like, 12.
The Big Bang Theory Season 1, Episode 2

(ENGINE RUMBLING)
Westworld Season 3, Episode 8

that your check ENGINE light
was on?
The Big Bang Theory Season 7, Episode 17