给xxhhwxc,关于valve seal

楼下帖子都快刷屏了,我另开新贴。我说的就是 valve seal (or valve stem seal),不是piston ring seal。valve seal 就是一调节seal,而不是起完全密封作用。engine工作时需要少量油来润滑valve stem(我原帖写的是piston ring,记错了,引起误会)。如果该seal老化,过多的oil 下流而导致气缸烧机油,从而产生蓝或黑烟。对楼下车主来说,只要烧机油有限,而且engine performance没什么变化,问题可以放一放。
我顺便把我学车是的教材上的关于valve seal 的讲述发在这儿以供参考。注意下图中的红线部分。
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所有跟帖: 

you are right -xxhhwxc- 给 xxhhwxc 发送悄悄话 (170 bytes) () 08/04/2010 postreply 16:08:34

have you changed the seals? -隐睾- 给 隐睾 发送悄悄话 (0 bytes) () 08/05/2010 postreply 09:52:22

yes -xxhhwxc- 给 xxhhwxc 发送悄悄话 (49 bytes) () 08/05/2010 postreply 10:35:35

have you changed the seals? -隐睾- 给 隐睾 发送悄悄话 (0 bytes) () 08/04/2010 postreply 16:22:06

No. Valve job needs some special tools. -biglow- 给 biglow 发送悄悄话 biglow 的博客首页 (0 bytes) () 08/04/2010 postreply 20:56:43

you just need a valve spring compressor -xxhhwxc- 给 xxhhwxc 发送悄悄话 (34 bytes) () 08/05/2010 postreply 10:38:08

回复:给xxhhwxc,关于valve seal -乱猜- 给 乱猜 发送悄悄话 (249 bytes) () 08/04/2010 postreply 20:13:15

Thanks Biglow!! my valve seal issue -wenxue06- 给 wenxue06 发送悄悄话 (501 bytes) () 08/05/2010 postreply 09:11:40

Go to a shop if you have too much money to throw away -xxhhwxc- 给 xxhhwxc 发送悄悄话 (237 bytes) () 08/05/2010 postreply 10:44:03

Super Thanks! I will check it often -wenxue06- 给 wenxue06 发送悄悄话 (37 bytes) () 08/05/2010 postreply 11:18:33

If car needs 1 qt oil every 500 miles, it probably -khyang86- 给 khyang86 发送悄悄话 (198 bytes) () 08/05/2010 postreply 11:18:59

回复:If car needs 1 qt oil every 500 miles, it probably -Yangtze430030- 给 Yangtze430030 发送悄悄话 (105 bytes) () 08/05/2010 postreply 12:19:48

回复:回复:If car needs 1 qt oil every 500 miles, it probably -khyang86- 给 khyang86 发送悄悄话 (397 bytes) () 08/06/2010 postreply 10:25:02

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