I have 83 cutlass with a v6 and when I start it up the motor sound like it's at full throttle but the throttle looks normal
OK, it's probably the choke or idle speed control, which sounds out of control according to your description.
Where would the choke be located on a 83 Cutlass?
Close to the carburetor. I'm working on my 83 cutlass supreme as well.
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