| Answer | Crossword Clue |
|---|---|
| REV | Speed up, as an engine |
| REV | Speed up an engine |
| RACED | Ran with undue speed, as an engine. |
| REV | Step (up), as an engine. |
| REVS | Cranks up, as an engine |
| REVS | Speeds (up), as an engine |
| REVS | Fires up, as an engine |
| SUPERCHARGE | Pep up, as an engine |
| SEIZE | Stop working, as an engine, with "up" |
