I was changing my power steering lines and after testing I noticed this part leaking beneath the injector lines on the drivers side. What is it? Is it missing a cap or something?

Manual primer pump. They are known to develop leaks and are easily replaced.

John

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Certified Registered Nurse Anesthetist (CRNA)
2002 F250 powerstroke with Plantdrive WVO conversion
1983 300SD 190K miles ,sold
2006 E320 CDI

Also, you currently have the old style pump. The new one will be black and smooth and slender.

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1982 300sd from craigslist $800 greased on one tank with NO CONVERSION in the Hot Texas Sun. (currently dead & awaiting engine damage investigation and/or longblock swap)
new daily: '03 vw 5speed jetta tdi wagon. bagged&chipped

As they said, replace it with one of these...



Also judging by the grime on the filter....I would say you could use new fuel filters.

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It's a realtivly easy job and a great time to change both fuel filters. One thing I found interesting was the short fuel line between the pump and pre-filter was stamped NOT FOR FUEL - got to love PO.

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1983 300SD
1988 420SEL