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1 故障现象一辆日产NISSAN轿车在怠速和中、低速运转时排气冒黑烟严重,随着节气门的开大,排气冒黑烟现象逐渐减弱直至消失。
A failure Nissan NISSAN sedans in the idle and medium and low speed exhaust black smoke serious, with the throttle open, exhaust black smoke gradually weakened until disappear.