Hi Jake,
The pump timing shouldn't be an issue unless it has been removed. There is no easy way to check it without pulling it off. The spec is 20 deg ATDC #1.
Ignition timing should be set at 25 to 30 deg BTDC at 3000.
Regards,
Randy D.

------------------
W.R.Durrance
ASE Master Tech
Mercedes Tech 21 Years
68 250SE
68 SAAB 96 Ice Racer
69 300SEL 6.3
70 300SEL 3.5
81 300TDT
W.R.Durrance Engineering