2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Okay, been working on rotaries for a decade. I am just stumped.

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Old 01-14-16 | 08:47 AM
  #26  
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Rot005
 
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gxl

Originally Posted by Tyblat


compression wise she is solid, just smokes like a damn chimney for reasons im still trying to diagnose.
Most of the time when you smoke blue is an indication of your oil control seals, but when you have that milky white stuff in your oil, chances are your water seals. Do a compression test again when the car is cold and another one when is warm, and read the pressure on every face of the rotor on both a healthy engine should give you around 80psia.
Old 01-14-16 | 08:54 AM
  #27  
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Rot005
 
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gtu

Originally Posted by Tyblat
this was the car a few months ago. i cant for the life of me remember if it was warmed up already, but I believe it was cold.


https://www.youtube.com/watch?v=uQMxrE9-oDE


its now harder to crank from cold, and will smoke your neighborhood out. and if the idle starts surging, good god.
If you look that smoke is more white than blue, it looks your engine is bypassing water chances are your water seals are bad. The surge is a different problem, you need to calibrate your tps (need tobe adjusted).
Old 01-14-16 | 01:16 PM
  #28  
roTAR needz fundZ
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Originally Posted by Rot005
Most of the time when you smoke blue is an indication of your oil control seals, but when you have that milky white stuff in your oil, chances are your water seals. Do a compression test again when the car is cold and another one when is warm, and read the pressure on every face of the rotor on both a healthy engine should give you around 80psia.
You can have excellent compression and still have a bad coolant seal, all depends on where the break is
Old 01-14-16 | 06:02 PM
  #29  
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There are some coolant passages in your intake manifold, they have to do with fast idle.
They may be leaking coolant into your intake, which may also explain the vacuum leak you have been chasing down.
That also may explain why the smoke stops after the engine warms up.
Although you may have stopped the leak with a alumaseal, I would take a good look at the intake, find the problem and replace the coolant.
Old 01-14-16 | 07:08 PM
  #30  
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Originally Posted by Tyblat
Pulled the oil filler cap off today, noticed this... So I take it my diagnosis of coolant was confirmed?
no. to get coolant into the oil the coolant has to leak out side the engine, and then leak back into the engine, its basically impossible.

you are seeing condensation, and since its near oil it gets goopy like that. change your oil, or drive the car on longer trips and it will get better/go away
Old 01-14-16 | 08:17 PM
  #31  
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never seen coolant in the oil
blue smoke is generally oil burning
no way coolant can get into the engine via the AWS


the fact the smoke subsided is probably just coincidental as it usually has a direct relation to ambient temperature and humidity, cold seals take longer to warm up and become pliable to the point of sealing.
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