audi 5000t rough running

[Randberg at aol.com]

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My 85 5000s turbo starts, but will not keep running unless I keep pumping the
gas. It will not idle at all. I have replaces a few broken hoses. Could this
be  a bad O2 sensor. (The O2 light comes on) Or a bad/leaky injector?. I
replaced plugs with recommended autolite's. Do I need better plugs. Audis are
new to me but I am learning. Randy in MN