Ford Transit 2.5 TD 1998 Diesel pump leak?

Hi there, i was wondering if anyone can suggest what i need to do..My 1998 TD transit has developed a diesel leak from around the pump area even though i cant see where it is coming from. its not the pipes its coming from under the casing. this is an electronic controlled pump with a electrical plug that goes into the back of it. 1, will i need a new pump or 2, can i get it repaired, if so how much do you think it would cost. I had a non turbo transit b4 that did the same but the man replaced what ever it was insitu as it was coming from the top.... Help and advice much needed

transit problems
March 2010