I checked the resistance across the plug wires (one lead on distributor end, the other lead on the spark plug end). The Helm's manual says the resistance should be less than 25K ohms and it was for all 4 wires.

I'm leaving town tomorrow for two weeks, so I'll have to try the wires/cap/rotor replacement when I get back.

The distributor in this car's always been suspect, but I did change it out once with no difference. That was last summer though too, so I could try that again. When I get ready to do the cap/rotor, I'll check for oil in there. The car was losing oil prior to doing the oil pan, but I thought it was all due to leaking out the drain bolt. I suppose some of it could've been leaking in the distributor, but I didn't see any oil on the block in that neighborhood.

Thanks guys, and I'll let you know what I find out when I get back into town.