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Re: Any black smoke after start up?

Catalytic converter work more efficiently when<br> hot.Its job is to finish off what the O2 sensor<br> has left off.The experts adviced that drive the car to heat up before emission insp.My guess is<br> a partially clogged up fuel injector/s.Try<br> using fuel injector such as Techron.It might<br> do the trick.Good luck!
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