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My car is C200 cdi coupe 2004 (CL203), recently the turbo has been working on and off. Most of the time, when I start the engine the turbo doesn't work, then, I have to switch the engine off and on again for the turbo to come on. It is getting worse, more often than not the turbo will not work...

The engine (W210 E220 cdi) does not start after I removed the no1 and no4 injectors out, and refit them using new copper washers and bolts; the injectors were leaking a bit and this is something that I have done on this engine a few times over the years. I never had any problems starting the...

I would like to test whether my fuel pump works or not. I took off the delivery pipe from the pump and I cranked the engine, many times, while I had my finger on the delivery side. The pump was delivering fuel but there was hardly any pressure. Is this right?

The battery went flat on the A170 W168 and when I tried to start it by connecting jump leads to another car, it came up with the error on the dashboard "error start". The engine will not turn even when I charged up the battery. Do you think it had blown a fuse somewhere of there is a problem...

The engine (E220 W210) cuts out unexpectedly while driving without any misfiring or any other obvious indications apart from the EPC light coming on as soon as I turn the ignition on and stays on throughout. When the engine stops, it starts again almost straight away. I presume that there is a...

The battery went flat for a while and now everything works fine apart from the EPC light coming on straight after I switch the ignition on and stays on. Also, the central locking system works when I press the button on the console but it does not work with the fob which means that I can not lock...

The engine misfires and stalls; diagnostics show that the fuel pressure sensor reads erratic fuel pressure,(front of the fuel rail) with very high spikes of pressure or very low; the fuel pressure sensor was replaced but there is no change to the engine, still stalls and misfires. When I...

The fuel tank was almost empty and I put 2 gallons of biodiesel (C class 220 cdi 2003); the engine stalled, misfired and run rough. I have filled the tank up twoice since so there is no biodiesel left in the tank, but the car has not been able to recover. The biodiesel that I have used works...