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旧 Jan 9th, 2011, 11:33     #1
深呼吸
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默认 Failed to pass HC ppm@40km/h

在CT做的尾气测试,结果:
Failed HC @40km/h: 75ppm (limit 55)
Passed:
HC at Curb Idle: 86ppm (limit 150);
CO at 40km/h: 0.06% (limit 0.31);
CO at Curb idle: 0.12% (limit 0.7);
NO at 40km/h: 201ppm (limit 0408);
RPM @40km/h: 451
RPM @Curb idle 630

老车,98Intrepid, 排气管有时会排蓝烟(停车起步后)。才换的机油,加的是91号油,高速跑了10分钟,前一缸油加了CT的Guarantee to Pass。还请各位朋友给个主意,可能是什么问题?车是不值得再修了,但Conditional Pass可要花450刀以上。
先谢谢了。

此帖于 Jan 9th, 2011 12:05 被 深呼吸 编辑。
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旧 Jan 9th, 2011, 12:53   只看该作者   #2
biby
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默认

450刀也不值的花吧, 换车算了
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旧 Jan 9th, 2011, 15:38   只看该作者   #3
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默认

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450刀也不值的花吧, 换车算了
计划夏天换车,但现在要renew licence。想着换一下air filter,加点stop leaking 到机油里,明儿找一个专做测试的点再测一次。
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旧 Jan 9th, 2011, 15:49   只看该作者   #4
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默认

计划不如变化快, 现在去买估计还能买到2010款疯狂打折的
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旧 Jan 9th, 2011, 18:18   只看该作者   #5
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默认

搜了一下,有点迷惑,是不是应该用87号汽油而不是91号以助减少HC?
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旧 Jan 10th, 2011, 11:48   只看该作者   #6
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默认

"排气管有时会排蓝烟" 是烧机油的症状; Failed HC @40km/h: 75ppm (limit 55) 说明有部分汽油没有燃烧。

换"87号汽油而不是91号以助减少HC"可能没有帮助, 换"air filter"可能有帮助。


及有可能是一个汽缸MISSFIRE, 或者根本不工作。 不知有没有"CHECK ENGINE" 灯亮? 最好检查一下

-----------------
向往天空那一朵云
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旧 Jan 10th, 2011, 13:12   只看该作者   #7
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默认

空滤,火花塞高压线HC老吴说得对燃烧不完全

----------------哪有什么上流,都是他妈的下流-------
--------我来华枫就办三件事:灌水,灌水,还是他妈的灌水-----
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wuyong (Jan 11th, 2011)
旧 Jan 11th, 2011, 20:40   只看该作者   #8
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默认

check engine 没亮。10万到现在的28万公里从没有换过火花塞,不知道还能不能拆下来。不过油耗还可以,9.5L/100kg, 2.7L。
网上有人说加点gas line antifreezer 有助减少HC?
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旧 Jan 11th, 2011, 21:27   只看该作者   #9
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默认

就是交钱过了算了。不要修了。
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旧 Jan 11th, 2011, 23:05   只看该作者   #10
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默认

那是没有用的。 你要找到"有部分汽油没有燃烧"的原因;而不是"燃烧不充分"。

汽油没有燃烧, HC高;燃烧不充分, CO 高;发动机太热, NO 高

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check engine 没亮。10万到现在的28万公里从没有换过火花塞,不知道还能不能拆下来。不过油耗还可以,9.5L/100kg, 2.7L。
网上有人说加点gas line antifreezer 有助减少HC?
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旧 Jan 24th, 2011, 22:52   只看该作者   #11
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默认 换了火花塞,油耗增加

12L/100kg, was 9.5. 本想换火花塞有助减少排放,现在看来麻烦更多。
下面是换下来的火花塞,请问为何大多油兮兮的?
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旧 Jan 24th, 2011, 23:39   只看该作者   #12
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默认

从照片看,四个缸有漏机油的现象,火花塞的间隙过大了。
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旧 Feb 7th, 2011, 22:54   只看该作者   #13
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默认

新年好气象,终于通过了尾气测试。
有点悬,HC ppm刚好达标。上周换了火花塞,清洗了coil,换了air filter,加的89号,测前高速上开了约20分钟, 检测点 Pennzoil 10 Minute Oil Change.

HC at high: 55ppm (limit 55)
HC at Curb Idle: 45ppm (limit 150);
CO at high: 0.04% (limit 0.31%);
CO at Curb idle: 0.05% (limit 0.70%);
NO at high: 202ppm (limit 408);


祝大家钱兔似锦。
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