I have a 94 C280 with occasional hard starting. You have to crank it more than usual in order to start. I am having a difficult time finding the problem because it only happens 1 out of 20 starts and it doesn't matter what engine temperature.
Since the car has only 35k miles I only tried putting new plugs. Could it be plug wires or one of the coils?
Any ideas?
Thanks.
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