The 82 300CD has quite a 'tude. Driving along today I heard the wierdest sheetmetal being hit noise.

Kinda a hollow THUNK, from behind me. Pulled into a gas station, walked all around, finally popped the fuel cap, after a bit of trying I got it to break vacuum with a whoosh.

Got it home with the cap off, pulled the trunk junk out and my tank has a divot where it sucked in.

I see what looks like a vent outlet/inlet next to the fuel cap, but where's the check valve (assuming there is one right??).

This puppy is moving itself closer to the fix and sell category, but I like the CD body so much I'm trying not to pass judgement just yet.

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Eric, CPO, Submarines, retired.
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Mine: '68 Corvette LS1/4L65E, 83 240D, 2000 GMC 4x4, 08 FLSTC Anniv
Hers: '72 Corvette 454/4spd, '99 MB SLK, '93 Metro vert, 78 240D, '92 Silverado, '65 Fjord Rustang, '59 Fjord Fairlane, '17 Slingshot.