TD5 Oil Leak

Hello ive had a oil leak for months now and its like niagra falls. ive got underneath t and cant see where its coming from it seems to be running down the Drivers side of the block but seems to be all the up th eside of the block i was just wondering if anyone could think what it could possibly be before i strip it?????

Fuel pressure regulator.
Back of the block where number 5 glow plug would be if it had one.
Common problem on the TD5.

Shifty1962 said:

Fuel pressure regulator.
Back of the block where number 5 glow plug would be if it had one.
Common problem on the TD5.

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What isn't a common problem on a Td5?