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第27章 大赛前夜,暗流涌动

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    第27章大赛前夜,暗流涌动(第1/2页)
    周四傍晚,
    夕阳像融化的蜜浆,
    把实训楼的整片玻璃幕墙染成一片暖橙色,余晖斜斜洒在校园的林荫道上,给行道树镶上了一层柔和的金边。
    随着下课铃声散去,
    校园里渐渐热闹起来,篮球场上此起彼伏的呐喊声、食堂门口熙熙攘攘的喧闹声、社团招新的音乐声交织在一起,满是鲜活热烈的青春气息。
    陈凡刚结束技能大赛赛前简单的设备熟悉流程,从实训中心缓步走出。
    他没有和扎堆说笑的同学同行,独自一人沿着树荫慢行,指尖还残留着触摸实训设备的微凉触感。
    口袋里的手机突然连续震动起来,他掏出来一看,来电人赫然是李雪薇。
    脚步微顿,他按下接听键。
    刚一接通,那头就传来李雪薇又急又无奈的声音,背景里还夹杂着汽修厂特有的金属碰撞叮当声、扳手拆卸的脆响,以及隐约的发动机轰鸣声,乱糟糟一片,能听出她此刻的焦头烂额。
    “陈凡,救命啊!我这边真的顶不住了!”
    陈凡语气平静:
    “怎么了?”
    “还不是上次跟你说的那辆进口跑车!”
    李雪薇语速飞快,像倒豆子一样把情况一股脑说出来,
    “车主是个做工程的大老板,车是进口性能轿跑,落地一百多万。最近半个月一直怠速剧烈抖动、低速跟车顿挫明显,可跑高速反而一点事没有。前前后后跑了三家修理厂,火花塞、点火线圈全换新的,节气门、喷油嘴深度清洗,甚至连机脚胶都拆下来换了全新原厂件,钱花了小一万,毛病一点没见好,反而越修越让人闹心!”
    陈凡静静听着,没有打断。
    “老板今天亲自开车过来了,脸色特别难看,全程黑着脸,说再修不好就直接拉去4S店闹,还要拍视频曝光我们汽修厂技术不行、坑骗顾客。”李雪薇唉声叹气,声音里满是憋屈,“我把我爸以前带的、修了二十多年车的老师傅都叫过来助阵了,三个老资历围着车查了整整一下午,OBD电脑读故障码全是正常,数据流各项参数也看不出明显异常,一群人全都懵了,彻底没辙。”
    她顿了顿,
    语气里带着一丝委屈,又藏着毫不掩饰的崇拜与依赖:
    “我实在没办法,只能跟老板拍胸脯打包票,说我有个兄弟技术神得离谱,不用上车、看一眼就能看出毛病根源,他才勉强答应再等半天。陈凡,你能不能现在帮我远程看看?再搞不定,我这汽修厂开了十几年的招牌,今天就要彻底砸了!”
    李雪薇从小跟着父亲在汽修厂摸爬滚打,性格泼辣好强,又极要脸面,把汽修厂的口碑和招牌看得比什么都重。
    这次遇上这种查不出码、修不好的疑难杂症,是真的慌了神。
    陈凡淡淡应道:
    “你把发动机舱全景、进气歧管周边、碳罐电磁阀位置,还有底盘排气管前段,分别拍清晰视频发给我,镜头稳住,光线打足,越清楚越好。”
    “好!我马上拍!保证给你拍得明明白白!”
    挂了电话,陈凡索性走到路边一处安静的香樟树下站定,避开往来人流。
    没两分钟,李雪薇的四条高清视频接连发了过来,镜头稳、光线足,细节清晰,看得出来她急归急,拍的时候格外认真细致,生怕遗漏任何关键部位。
    周围路过的几个同学认出陈凡,纷纷笑着主动打招呼,眼神里都是毫不掩饰的敬佩。
    如今在湘南职大,“找凡哥”早已成了解决各种疑难杂症的代名词——不管是机器故障、医学难题,还是稀奇古怪的麻烦,似乎只要找到陈凡,就没有解决不了的。
    陈凡微微点头示意,随即点开视频,双眼微微一凝,眼底掠过一丝极淡的金光,不动声色间全力催动二转·溯本追源瞳力。
    这一刻,
    他的视线仿佛穿透手机镜头、跨越数公里距离,直接“落”在那辆进口跑车的机舱内部,每一个零件、每一条管路、每一处接口,都清晰无比地呈现在眼前,纤毫毕现。
    火花塞崭新锃亮、点火线圈工况正常、节气门光洁无积碳、喷油嘴雾化状态良好、机脚胶无老化开裂……
    和李雪薇说的一模一样,能换的易损件全换了,能清洗的部位全洗了,表面上看一切完美,找不到任何明显故障点。
    但陈凡的瞳力没有停留在表面,而是顺着进气、排气、废气循环系统一路溯源,短短几秒,就精准锁定了隐蔽至极的异常点。
    故障根源根本不在点火系统,也不在供油管路,而在废弃再循环阀(EGR阀)内部阀芯积碳卡滞——阀门看似闭合,实则关不严实,怠速状态下始终有少量废气悄悄窜入进气道,导致空燃混合气比例失调,进而引发怠速抖动、低速顿挫。
    车辆高速行驶时
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