The spark plug sequence for a Renault Espace is as follows:
1-3-4-2
Starting from the front of the engine, the first spark plug is located in the first cylinder on the left side. The second spark plug is located in the third cylinder on the right side. The third spark plug is located in the fourth cylinder on the left side. The fourth spark plug is located in the second cylinder on the right side.
Here is a diagram of the spark plug sequence for a Renault Espace:
```
+---+---+---+---+
| 1 | 3 | 4 | 2 |
+---+---+---+---+
```
