Oldsmobile/Buick Repair: 1987 olds cutlus cieara 3.8, diagnostic procedure, pressure test

Question
i have spark and 34lb. of fuel new injectors pump  regulator filter coils module wires plugs the car wants to start but when it does it runs but lean real lean it wants to missfire and also every sensor has ben changed no engin codes desplayed ever help

Answer
Since I do NOT have access to the vehicle to perform the test procedures and IF you performed all the diagnostic procedures CORRECTLY, BEFORE installing all these components. I can ONLY give you what I have found over the years when ALL of the diagnostics of the components that you REPLACED were TESTED and found that the components were NOT the fault, The end result in the diagnostic procedure was usually in most cases a fault within the vehicles computer.

Are you POSITIVE that you do NOT have an exhaust restriction ?. Did you perform a back pressure test to confirm it ?.

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