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.
Fuel Injection
One output stage drives 3 injector valves. The injection cycle is therefore divided into groups (semi-sequential injection). This also ensures restricted engine operation in the event of failure of one group. At a speed of 600-800 RPM, fuel is injected only once per 720 degree crankshaft angle into one cylinder group. This facilitates precise metering of the quantity of fuel since the injector valves need not be actuated so often. Parallel injection (activation of all injector valves simultaneously) as in the DME M1.2 system is no longer possible.
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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.