. What could be causing this.

1993 CADILLAC ELDORADO
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CAROLFOR
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Just replaced ERG valve amd cyliniod and fuel injector hose. Now car is hard to start,****** when driving and sitting still like it's going to cut out amd black smoke is coming from the tailpipe.
Nov 11, 2011 at 6:51 PM
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RASMATAZ
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Check fuel pressure if its within specs-Black smoke indicates its runningto rich -could be an oxygen sensor, leaky injector, fuel pressure regulator and coolant temperature sensor-
Nov 11, 2011 at 6:57 PM