check fuel preassure. test for codes, and make sure it's injecting fuel correctly... that is the old CFI, and while it is a very simple setup. it is crude and somewhat finiky .. if needed you could hook up a holley 2bbl on that manifold with a factory duraspark II distributor and basicly have the same setup as the '83 version of that car.. IIRC it only lasted '84 and '85