Hand pump leaks, ALDA?

[SirMatt]

Took my "new" '84 300D home today. Still can't push it over 75mph and I can't get the rpms over about 3300 in fourth.

The hand pumps leaks like crazy if you try to pump it. One pump will spew several ounces of diesel out from around the pump handle and onto the ground. Screws down tight and doesn't leak. Is this a problem?

Still no smoke. Ever. At all. Cold, warm, under load, at idle. Nothing. Zilch. Nada. Could it be sucking air or is it the ALDA doohickey. I've seen several ALDA posts that seems to mimick my symptoms. I'm probably 30 secs 0-60. Runs fine at up to about 75 but won't push any faster. Is the ALDA adjustment REALLY a good thing to experiment with. Looks like the Germans engineered specifically so you couldn't mess with it, but from the frequency of the posts it looks like it's done often enough.

Thanks for the help in advance.