Fuel pressure level
| In the central fuel injection (CFI) system | 1 atm (14.5 psi) |
| In electronic fuel injection (EFI) | 2 7 atm (39 psi) |
Tightening torque specification
| Nm | (foot pounds) | |
| for four-cylinder engine: | ||
| Fastening the throttle body to the intake manifold | ||
| up to and including 1991 | 20.3-33.9 | (15-25) |
| 1991 release | 20.3 | (15) |
| Fastening the upper intake manifold to the lower one | 20.3-29.8 | (15-22) |
| For engine 3.0LV6: | ||
| Throttle body to lower intake manifold | 20.3-29.8 | (15-22) |
| For engine 3.8LV6: | ||
| Fastening the upper intake manifold to the lower one | 25.8-38 | (19-28) |
| Throttle body to upper intake manifold | 20.3-29.8 | (15-22) |