Here is a diagram of the spark plug locations:
[Image of spark plug locations]
1. Number 1 spark plug is located at the front of the engine, on the driver's side.
2. Number 2 spark plug is located next to number 1, also on the driver's side.
3. Number 3 spark plug is located at the front of the engine, on the passenger's side.
4. Number 4 spark plug is located next to number 3, also on the passenger's side.
5. Number 5 spark plug is located at the back of the engine, on the driver's side.
6. Number 6 spark plug is located next to number 5, also on the driver's side.