sorry the vin is The chassis number is WFOWXXGCDW5R24943.

Hi,

I have been speaking with the garage and they are telling me its the high pressure pump I need as I have debris inside the fuel filter. I have purchased the in tank one which apparantly is the wrong one. Can anyone tell me what the likely cost of a replacement will be and if its a job which I could do myself?

I have recently changed one on my C5, I know the engine isn't the same but I would think the process would be similar.

You need to take then cam belt off as it drives the pump, remove the pump pulley and then the pump, being careful to keep the disconnected pipes clean, better to change the water pump as well while you have the belt off. A new HP pump will cost a fortune but I got one for mine off ebay for £55.00. Check your pump for make and type.

I used to have a Focus 1.8 TDCI and I understand the fuel pump is driven by a short drive chain from the crankshaft pulley, and then a rubber cambelt drives the cam from the fuel pump pulley.

I imagine if replacing the fuel pump you might as well change the cambelt and tensioner, water pump and perhaps the fuel pump drive chain at the same time.

I'd guess this is a fairly involved job, as you would need to ensure the timing is set correctly from the crankshaft via the fuel pump drive chain to the cambelt.

Suggest finding a good independent to do the work. New HP fuel pump will be very expensive so finding a good secondhand one would be necessary. Might also be an idea to get the fuel lines replaced (they cannot be re-used once removed) and injectors cleaned at the same time in case any metal fragments have found their way into the fuel system after the HP pump broke up.

Might be cheaper to just get a good secondhand engine fitted?