Was sorting out my egr problems this morning and noticed that there was diesel dripping from the bottom of the fuel filter when the engine was running. I have checked the two pipes going in and they dont appear to be leaking, but think it may be coming from the bottom of the housing. Is there a sensor on the bottom? Any ideas if you can lift the whole unit out? I was wondering if a sealing washer has gone?

Any ideas welcomed!!

Car is 1.9cdti