MB 380 SEL / 180000 MILES / V8

1983 Ford Other

The car shakes, blows black sooted smoke from the exhaust pipe, rpms drop to the stalling point (well below 5). I replaced the plugs, the new ones have also black soot on them. It runs (in idle) a bit better at higher rpms - when stepping on gas but when I let go they (rpms) drop drastically, stalls.
Cannot really drive it - am desperate since my knowledge about cars/engines is minimal and really cannot afford to take it for repairs nor know anyone honest enough.
Please help - any suggestions?
Thank you. Any help will be highly appreciated.
April 29, 2007.

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