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Just boughta stock '81 ZX turbo coupe. Have put new wires, plugs, cap & rotor on engine. New 2 1/2 cat back w/Dynomax super turbo muffler.
Having a great time playing with the car but, when I bought it, it idled very roughly when cold. Idle is very low, abut 500-550 but, when car reaches operating temp, it smooths outand increases to about 650-700. The ignition helped quite a bit but it still idles roughly when cold. I can't find any vacuum leaks but one injector is leaking slightly between the body of the injector and the flange that holds it to the manifold. I can't see anything else wrong.

Any suggestions as to what to look for to smooth the idle and increase the idle speed when cold?
 
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