Dear Dieseldude:

Thanks for the prompt reply.

I checked the pump and timing belt area for leaks but found none.

The whole area is quite dry and pristine. No sign of diesel fuel anywhere.

I regularly have the engine washed and would know immediately if there are any suspicious leaks around.

Now if any of those seals were leaking, shouldn't the front area of the engine be bathed in diesel fuel?

There is nothing on the concrete floor of the driveway or even on the underpan.

Is there another path the fuel could be taking that would not cause fuel to leak into the front of the engine?

Strange isn't it?

Thanks a bunch,

Yours truly,

Dusky Lim

P.S. Could the pressure regulating valve be stuck open and allow diesel fuel to leak paste back into the tank?