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

Died on road, won't start.

Old 03-16-2012, 11:28 AM
  #11  
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Done that quite a few times. This is strange, I have spark, fuel and air but no combustion.
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Old 03-16-2012, 11:30 AM
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maybe the spark plug threads need cleaned, on the inside of the head. so that its not properly grounding itself.
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Old 03-16-2012, 11:36 AM
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I'll give that a shot. Is it possible for the spark to not be hot enough for ignition?
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Old 03-16-2012, 11:38 AM
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i know on the old ford v8's the coils wear out so i would guess they do on the newer imports as well.
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Old 03-16-2012, 01:16 PM
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you need spark fuel and timing (air is pretty much a given here...).

Seems to me timing is the issue and thats likely due to either timing belt or the electronics.

Interestingly though, I think if the cas wasn't working properly you would lose both spark and fuel...maybe there is something else at work here?
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Old 03-16-2012, 02:13 PM
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You are a smart fellar Mr Track.
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Old 03-16-2012, 02:38 PM
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it would have to be ignition timing as he's checked the cam timing. but yeah...
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Old 03-16-2012, 03:00 PM
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He checked the CAS, but I'll let him reveal the cause.
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Old 03-16-2012, 03:26 PM
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Originally Posted by flying_solo
He checked the CAS, but I'll let him reveal the cause.
prop correct answer? lol
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Old 03-16-2012, 03:33 PM
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prop -----, :P
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