Wow this is encouraging.

Did you notice a ring around the plunger?
When I removed my DVs I noticed a wear ring where the plunger made contact with the holder. I polished them as best as I could, but was unable to remove that ring. What other visible differences did you notice between your worn valves and the new ones?

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1981 240D 4sp manual. Ivory White.

It was luck more than judgement, I guessed the difference between turbo 962 and 910 n/a fuel delivery related to plunger/barrel size - this turned out to be correct.

Visually the fluted plunger from worn DV sat lower in holder, perhaps by 2/3mm - hard to tell exactly, the fluted tail fit inside convinced me it was worth a chance, if the tail cannot maintain a vertical path it may seat at varying angles with each stroke.

As mentioned above, I have had to dial everything back as too much fuel being delivered, this suggests the DV's were allowing fuel to bypass the seat.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

Just to clarify, the plunger is the bit below DV - M pump needs cam out to release those which I left alone.

Not sure what the bit is called with flutes ?

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

Sorry, I'm referring to the delivery valve set which is the plunger (thing with the flutes) and the holder (thing the thing with the flutes slides into) –the photo you posted. This is the item people seem to have good luck with replacing and curing shakes.

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1981 240D 4sp manual. Ivory White.

Metal on metal normally has to be lapped to make a good seal, think of the fluted mushroom (new name) as a regular cylinder valve upside down, if the oil seal/guide was shot you would get uneven seating blow back.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

DAMN I love the technical details I get here ! .

Plus, who wants dirty pigs ? .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better