blue smoke again...

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Old Apr 29, 2002 | 08:44 PM
  #26  
Cyber ITR's Avatar
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From: Baghdad
Default Re: blue smoke again... (Tomakit)

is it possible to have good compression with fucked up oil rings ?!?!?
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Old Apr 30, 2002 | 01:43 AM
  #27  
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From: Yokohama, Japan, Japan
Default Re: blue smoke again... (94hondahybrid)

Yeah..i 'm going to troublshoot from the easiest to the hardest. I have a strong suspision that its my crankcase breather setup....I am using a very small diameter vacuum line to connect the breather on the valve cover to the intake pipe....when I found oil in the intake pipe...I notice that there was more oil toward the filter than the turbo....wishful thinking? maybe....but this is where I'm starting
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Old May 2, 2002 | 09:38 PM
  #28  
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From: Yokohama, Japan, Japan
Default Re: blue smoke again... (MiraiZ)

...Update:

okay...I did all of the easy stuff today....I pulled the PCV valve and cleaned it with brake cleaner...I blew into it and air seemed to go through it freely (one way)...changed the oil from Mobile 1 5w-40 (synth) to Nissan GT-R 10w-50 (synth)....they didn't work...the smoke seemed to have become lighter in color (maybe my imagination) none-the-less the smoke is still there. The smoke really smells badly (like sulfer)...So it may be valve stem seals or oil rings. I can't tell...I also noticed droplets of water in the exhaust...

Digest:
Blue smoke
tried changing to a higher viscosity oil (stayed synth)
cleaned PCV valve...no clogs

blue smoke seems to have gotton lighter in color but same amount
smell like sulfer or real stale gas
droplets of water in the exhaust

Questions about blowby:
1.Does it cause backfire?
2. The valve cover nippe that connects to the intake pipe or crankcase breather: Is it suppose to be sucking or blowing air?

3. what can cause excessive crankcase pressure?
4. Can a PCV valve that seems to work, still be malfunctioning and causing the symptoms above?



[Modified by MiraiZ, 3:45 PM 5/3/2002]
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