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NA (1989-1997) NA Miata discussion within. The MX5's first generation, the NA, sold over 400,000 units from 1989 to 1997.

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Old 10-14-2014, 12:46 PM   #21  
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OK you got me! These old eyes didn't bother to see the PCV valve on the other side just like you said. All I can think is that the tube is some sort of "re-breather" for the valve cover fumes.
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Old 10-14-2014, 01:14 PM   #22  
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Quote:
Originally Posted by fxpthl64 View Post
All I can think is that the tube is some sort of "re-breather" for the valve cover fumes.
I appreciate the help. So either way that hose shouldn't be the cause of my issue?

On my way home I'm going to grab a compression gauge so I can test my compression and thinking about buying a timing light as well because I remember someone mentioned I can advance the timing tj get a little more pep out of the engine.
As far as the spark plugs I believe they are still good. The tips are a little bit rounded which I don't think is good but it's not horrible. One spark plug did have quite a bit of oil on the threads. Is this something I should be worried about or is it ok?
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Old 10-15-2014, 04:10 PM   #23  
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Threads are fine. Oil on the electrode would have been an issue though.
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Old 10-17-2014, 02:26 PM   #24  
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So 90miata, how are things going with your issues?
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