Do you mean that I should remove the starter plug wire from the distributor? I guess (?) that might make the car attempt to start (thus pumping oil) but it won't actually start, thereby maybe pushing oil through there and removing slack in the chain? I'm just guessing.[/QUOTE]

The wire that you should remove is comming out of the top (middle) of the distributor cap and goes to the coil. The coil is mounted on the left fenderwell (driverside). The coil wire snaps in and out of place. Turn the motor over a few times and then replace the coil wire. Make sure it goes back just like it came out. It should have a decsive "snap"
as it is being put back.

Got a chain crimping tool for rent?

You're welcome
Dan