We had C230K - 1999. Similar odd startign problems - would turn over fien but not fire. We thought it was temp. related but after LOTS of toing and froing it was a faulty (physically) faulty relay in the boot by the spare wheel/battery. If was if ther car was parked on a slight tilt/twist that caused it.. Cost us weeks of bu$$ering about. I sugest you check that just in case....(fuel pump relay...)
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