My trunk smells like diesel, and always has. Lately, however, it seems to be getting worse. I checked the drain line that hooks up just below the fuel cap, and it is connected and runs out of the bottom of the trunk. I thought that maybe it had come disconnected, and I was draining diesel into the right side of the trunk, but it is still hooked up without a trace of diesel around it.

Any ideas? I'm fresh out.

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1982 240D - 292,000 miles and counting
Same family for 33 years
Newly rebuilt Monark injectors
Newly replaced clutch
New Bilstein shocks