还是从白垩纪就出现的P0420,换过新猫,开了5000迈后,又撑死了。于是就继续瞎搞。
这一篇是很多次小工程,集中以后贴出来的图,粗粗整理了一下顺序。反正是瞎搞。
从 exhaust manifold一路向下 查漏。这是从车底拆manifold与flex pipe的连接
![Image and video hosting by TinyPic](http://i40.tinypic.com/255hli8.jpg)
driver side螺丝下边是上游氧气探头当路,要拆
![Image and video hosting by TinyPic](http://i44.tinypic.com/2hicmd2.jpg)
从hood向下看。上边要拆隔热板
![Image and video hosting by TinyPic](http://i41.tinypic.com/33clv86.jpg)
拆manifold
![Image and video hosting by TinyPic](http://i40.tinypic.com/2j639z7.jpg)
黑忽忽的积碳。红圈是block后边的coolant排放孔
![Image and video hosting by TinyPic](http://i41.tinypic.com/o01f9e.jpg)
清理
![Image and video hosting by TinyPic](http://i41.tinypic.com/2pzjnrd.jpg)
拆下来 ,全部检查和 清理
![Image and video hosting by TinyPic](http://i43.tinypic.com/n30r4y.jpg)
检查螺栓
![Image and video hosting by TinyPic](http://i40.tinypic.com/167p89u.jpg)
换套新的。弹簧长度略有差异
![Image and video hosting by TinyPic](http://i40.tinypic.com/mu7syo.jpg)
密封圈,有积碳,但没有明显漏痕或损坏
![Image and video hosting by TinyPic](http://i39.tinypic.com/2qx9mde.jpg)
检查接口
![Image and video hosting by TinyPic](http://i40.tinypic.com/2q0kmrc.jpg)
检车氧气探头接口
![Image and video hosting by TinyPic](http://i40.tinypic.com/2rw9chs.jpg)
旧密封圈比较低
![Image and video hosting by TinyPic](http://i42.tinypic.com/k0ivky.jpg)
新圈压缩空间较大
![Image and video hosting by TinyPic](http://i42.tinypic.com/2uffw2d.jpg)
检查对接
![Image and video hosting by TinyPic](http://i42.tinypic.com/2m5msqq.jpg)
检查点火系统
![Image and video hosting by TinyPic](http://i41.tinypic.com/j93hhe.jpg)
翻阅手册,说coil没法检查
![Image and video hosting by TinyPic](http://i44.tinypic.com/30ihn4p.jpg)
后边的放水孔用上了。对,这是换coolant
![Image and video hosting by TinyPic](http://i43.tinypic.com/23iduae.jpg)
换thermal
![Image and video hosting by TinyPic](http://i40.tinypic.com/2dj2naf.jpg)
![Image and video hosting by TinyPic](http://i43.tinypic.com/15otu29.jpg)
最终以上动作都没能阻止强大的P0420回归。于是又买了新猫,比上次的新猫贵,结果对接更加不好。后来退货,买了焊接工具。预知后事如何,且听下回分解。
![Image and video hosting by TinyPic](http://i42.tinypic.com/2jew6ea.jpg)
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