Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1999 BMW 740iFACTORY OEM SERVICE PROCEDURE
Engine Performance: Application: Introduction: Introduction: Notes
1999 MODEL COVERAGE
| MODEL | BODY | ENGINE | FUEL SYSTEM | IGNITION SYSTEM |
|---|---|---|---|---|
| M3 | E36 | 3.2L 6-Cyl. | Siemens (SFI) | DIS |
| Z3 | E36 | 2.5L 6-Cyl. | Siemens (SFI) | DIS |
| Z3 | E36 | 2.8L 6-Cyl. | Siemens (SFI) | DIS |
| Z3 M-Roadster | E36 | 3.2L 6-Cyl. | Siemens (SFI) | DIS |
| Z3 M-Coupe | E36 | 3.2L 6-Cyl. | Siemens (SFI) | DIS |
| 318ti | E36 | 1.9L 4-Cyl. | Bosch ML-Motronic | DIS |
| 323i | E46 | 2.5L 6-Cyl. | Siemens (SFI) | DIS |
| 323is | E46 | 2.5L 6-Cyl. | Siemens (SFI) | DIS |
| 328i | E36 Convertible | 2.8L 6-Cyl. | Siemens (SFI) | DIS |
| 328i | E46 Sedan | 2.8L 6-Cyl. | Siemens (SFI) | DIS |
| 328is | E46 | 2.8L 6-Cyl. | Siemens (SFI) | DIS |
| 528i | E39 | 2.8L 6-Cyl. | Siemens (SFI) | DIS |
| 540i | E39 | 4.4L V8 | Bosch HFM-Motronic (SFI) | DIS |
| 740i | E38 | 4.4L V8 | Bosch HFM-Motronic (SFI) | DIS |
| 740iL | E38 | 4.4L V8 | Bosch HFM-Motronic (SFI) | DIS |
| 750iL | E38 | 5.4L V12 | Bosch M5.2.1 (Dual DME) Motronic | Distributor Breakerless |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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