| very | 18 | degree |
| because of some other problem | 12 | cause |
| depending on the operating conditions | 7 | other |
| engine → run → lean | 249 |
| engine → be → lean | 31 |
| engine → go → lean | 10 |
| engine → be run → lean | 9 |
| engine → operate → lean | 4 |
| negative | neutral | positive |
| 0.420 | 0.504 | 0.076 |
| Raw frequency | 303 |
| Normalized frequency | 0.746 |
| Modifier score | 0.780 |
| Perplexity | 211.581 |