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.
1997 BMW 328is StandardFACTORY OEM SERVICE PROCEDURE
Idle Speed & Mixture
IDLE SPEED & CO LEVEL
| Application | Idle RPM | (1) CO Level % | ||
|---|---|---|---|---|
| 4-Cylinder | 810-890 | .5-.7 | ||
| 6-Cylinder | 660-740 | .2-1.2 | ||
| V8 | 750-850 | .2-1.2 | ||
| V12 | 530-630 | ..... | ||
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Factory Service Tools
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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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