failed smog check with stock ka - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jdmspooge · 05-31-2007, 04:28 PM

What year is your car/KA? IMO could be your knock sensor, primary and secondary o2 sensor, and/or cat. But if it was your cat wouldn't you notice a dramatic loss in power? hmm... Tune up wouldn't hurt too. Any pending codes; sensor malfunction. Seafoam works wonders.

GL with it. Sorry can't really help much, but to ask questions/possibilities.

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05-31-2007, 04:28 PM	#10
jdmspooge Post Whore! Join Date: Jan 2006 Location: San Diego Posts: 2,609 Trader Rating: (39) Feedback Score: 39 reviews	What year is your car/KA? IMO could be your knock sensor, primary and secondary o2 sensor, and/or cat. But if it was your cat wouldn't you notice a dramatic loss in power? hmm... Tune up wouldn't hurt too. Any pending codes; sensor malfunction. Seafoam works wonders. GL with it. Sorry can't really help much, but to ask questions/possibilities.