| Answer | Crossword Clue |
|---|---|
| SPEED | Gear for the drive of an engine. |
| ANTIMATTER | Fuel for a warp drive engine on "Star Trek" |
| RAMJET | Kind of engine for an airplane |
| HOOD | Covering for an automobile engine. |
| COALED | Provided fuel for an engine |
| SPUTTER | Bad sound for an engine |
