Its been several years now I am driving my Mercedes w203 with cranking difficulty in the engine. Sometimes it starts at first try..sometimes, it took longer to start the engine. Still, it will crank at the end. This symptom causing me a lot of hassle, and stress... It took me many years to finally manage to really find the root cause of the problem. At one point, I just get used to the problem and live with it. Troubleshoot the Problem: Battery and spark plug has been changed a year ago...I also think fuel filter also is still good because it's just been replaced several years ago... I suspect it must be a fuel pump or something related to the fuel system. Therefore, decided to purchase a fuel pump and carried out fuel pump replacement work as on this link . However, after the fuel filter has been changed, the car still showing the problem although the new pump has been installed. So, googling around found one or two people suggesti...
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