02 Sienna 不停的冒藍煙

故事有點長就不在敲中文了, 轉我在其他論壇的英文貼.

Our Sienna is 2002 with 117,000 miles. It has been burning oil for years especially on highway but we never saw blue smoke when driving or at cold start. Got P1354 and low oil pressure about a year ago. I changedtiming belt, water pump, oil pump, all 6 spark plugs, OCV filter and gasket of the front valve cover. I also checked (measured) both OCVs and they were fine. The oil pickup screen had been cleaned also. But the oil burning issue become worse after the replacement and we started seeing blue smoke at cold start somedays. Was it due to the higher oil pressure (oil pressure increased a lot after the replacement)? We only drive it at local since then. Last week wife told me the check engine light was on. Got P1354 (again) and I reset it. However the CEL turned on again this morning and was also flashing. I told her stop drive it. Read the code and got P1354. The bad thing is when I turn it on it kept generating blue smoke and seems the blue smoke would not stop. I let it run for about 30 sec and turned it off and it smoked all the time.

Would a P1354 cause the blue smoke? What could produce a non-stop blue smoke? Any thought?

P1354 is complaining the VVTi malfunction. OCV is oil control valve which is part of the VVTi.

The van has slightly sludge, btw.

不停的冒藍煙會是什麽問題, 缸穿了?

先謝謝!

所有跟帖： 

• 藍煙說明有機油進入catalytic converter！ -than- ♂ (0 bytes) () 01/16/2015 postreply 05:29:04

• blue smoke usually indicates engine oil gets into cylinder. -QYZ- ♂ (82 bytes) () 01/16/2015 postreply 05:40:25

• I would check the compression pressure first -QYZ- ♂ (0 bytes) () 01/16/2015 postreply 05:41:18

• 車子多久換一次機油? -khyang86- ♂ (0 bytes) () 01/16/2015 postreply 06:13:22

• 3000 miles -tjzsm1- ♂ (0 bytes) () 01/16/2015 postreply 06:29:47

• 謝大家的回複, 車一直燒機油, 有時早晨啟動會冒一點藍煙, 懷疑 -tjzsm1- ♂ (106 bytes) () 01/16/2015 postreply 06:29:18

• 你懷疑的對，其實就是活塞密封除了問題，Oil進入了氣缸參與燃燒造成的 -JieHu-- ♂ (191 bytes) () 01/16/2015 postreply 06:41:49

• 一般早上啟動時冒藍煙,開時不明顯,問題多半是Valve seals已磨損, -khyang86- ♂ (568 bytes) () 01/16/2015 postreply 07:16:16

• 有道理 -QYZ- ♂ (0 bytes) () 01/16/2015 postreply 07:50:55

• 歲數不小了, 不太值得修了. 樓主想聯練手, 到是個好機會. -nonego- ♂ (333 bytes) () 01/16/2015 postreply 07:35:44

• Toyota engine's common problem. -bighead88- ♀ (0 bytes) () 01/16/2015 postreply 07:52:15

• 早期Toyota的發動機造的很好,尤其是06, 07年以前設計製造的,性能穩定, -khyang86- ♂ (455 bytes) () 01/16/2015 postreply 08:26:49

• 117kmi is premature to die. were you negligent on regular maint -老生長談- ♂ (69 bytes) () 01/16/2015 postreply 07:53:36

• 對，這種情況一開始就應該想法解決。拖到這時候沒必要修了！除非自己練手 -than- ♂ (0 bytes) () 01/16/2015 postreply 14:05:27

• 嘿嘿，你也迷信啊 -soccer88- ♂ (0 bytes) () 01/16/2015 postreply 15:31:48

• 讓樓主知道maintenance的重要 -老生長談- ♂ (6 bytes) () 01/16/2015 postreply 19:17:16

• 這個車這個問題挺普遍，看看link -soccer88- ♂ (449 bytes) () 01/16/2015 postreply 08:57:55

• QYZ說的有道理 -biglow- ♂ (106 bytes) () 01/16/2015 postreply 09:35:23

• 可以先換一下PCV valve 試一試，通病 -soccer88- ♂ (0 bytes) () 01/16/2015 postreply 10:15:38

• Again, 謝謝大家的回複, 非常有幫助, PCV已換過, OCV filter 換過, 該換OCV了. -tjzsm1- ♂ (0 bytes) () 01/16/2015 postreply 13:02:01

• 該換的都換了，看來是Piston Ring了 -soccer88- ♂ (0 bytes) () 01/16/2015 postreply 15:33:05

• 從你說的情況看，我感覺是嚴重燒機油造成了火花塞積碳，從而misfire。 VVT的功能是 -史迷- ♂ (789 bytes) () 01/16/2015 postreply 14:18:07