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.
Functional description
In the bottom load and engine speed range the swirl flaps are closed variably according to the operating range. In the following conditions the swirl flaps are fully open:
- Engine speed higher than 2250 1 rpm
- Fuel injection rate greater than 30 mg/stroke
The position of the swirl flaps is also corrected dependent on the ambient pressure. At ambient pressures less than 880 hPa the swirl flaps are opened further proportionally.
| Item | Explanation |
|---|---|
| 1 | Swirl flap actuator |
| 2 | Intake plenum |
| 3 | Swirl flaps |
| 4 | five-pin plug connection |
The swirl-flap actuator has an adjustment range of 110°. The adjustment time for opening or closing over the entire adjustment range is approx. 0.1 seconds.
NO RELATED
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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.