Zitat:
>>>How runs the engine at iddle-speed ?
Normal @ 800 rpm.
A straight six run more at 600-700 rpm,
BMW´s 4 zylinder engine´s are at 800-900 rpm.
So it could be a sign for a error, when your engine runs always at so high iddle-speed.
Info: after a "cold-start" the iddle speed is always a bit higher (800-900), that´s normal, but it should go dowan after some hundert meters.
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Es wird immer nur eine Marke geben mit Freude am Fahren und das ist BMW.