Hi friends. I need some tech advice from you. I have done some tests in my 1991-350SD, and I am concluding that the the crankshaft of the injection pump either is loose or broke. I removed the fuel pump and while cranking the engine the shaft doesn't move at all. The overhead cam is moving so I belive the timing chain is ok. Is diffficult to ask question about a 350SD because the answer is always, change the rods. The question is, is it difficult to remove the injection pump? Any special tool for that? How about a remanufactured pump? Thanks for reading.

Darrel Hillman
1991-350SD
102K