[Image of the 1998 Nissan Frontier engine diagram]
Key:
1. Air cleaner
2. Intake manifold
3. Fuel injector
4. Spark plug
5. Piston
6. Connecting rod
7. Crankshaft
8. Oil pump
9. Water pump
10. Timing chain
11. Camshaft
12. Exhaust manifold
13. Turbocharger
14. Intercooler
15. EGR valve
16. PCV valve
17. MAP sensor
18. TPS sensor
19. CKP sensor
20. CMP sensor
21. O2 sensor