For 1990-2009 cars only
Inspect the manifold (500) for the following conditions:
| • | Damaged sealing surfaces |
| • | Damaged or loose throttle body studs (516) |
| • | Loose covers (502 and 505) or damaged or missing gaskets (501 and 506) |
| • | Plugged or loose exhaust gas recirculation (EGR) tube (509) |
| • | Damage to the exterior of the manifold |
| • | Damaged bolt hole threads |
