W123

Dash smoke 1977 300D

Have experienced following:
1. Attempt to start - no crank and smoke comes from driver's side speaker area. Wait 10 minutes, try again, cranks and starts fine with no dash smoke.
2. Attempt to start later - again no crank, more smoke. Wait 10 minutes, cranks slowly but starts, no smoke.

Examination under dash reveals oil around ignition switch. My current thinking is to rebuild the vacuum pump and clean out all the vacuum lines I can reach.

What to do about the ignition switch? As I understand it, the switch is attached to a vacuum element that must have been polluted. It seems like the switch itself is now polluted too. Should I replace switch alone after vacuum pump rebuild? Or switch and vacuum element together?

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Fuel leak into trunk 82 123

I recently parked my car on a steep hill with the passenger side downhill. When I returned to my car there was fuel leaking down the street and inside the wheel well in the trunk. I unclogged the rubber piece that lets water out of the trunk and drained the fuel out. I use biodiesel and I don't see any worn through parts. Any idea how the fuel got into the trunk, all seems normal now but I wanted to make sure there weren't any safety issues.

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