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ny240gtr
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Joined: Tue Mar 25, 2008 6:36 am
Car: 1992 240sx coupe
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i change my spark plugs and am noticing that my engine is shaking kind of like a miss fire i check the injectors and they all good i took a spark plug or and they are black like really dark black what can it be

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adrianfromthecastle
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Joined: Wed Jun 29, 2005 5:36 am
Car: 1992 Nissan 240sx
Location: California

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honestly, the shaking sounds more like an injector problem.

Are your plugs gapped correctly?
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ny240gtr
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Joined: Tue Mar 25, 2008 6:36 am
Car: 1992 240sx coupe
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i put the ngk iridiums and it can be an injector cuz when i disconect the plug from the injector the engine shakes more like is about to shut of i did it with all injectors
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ny240gtr
Posts: 111
Joined: Tue Mar 25, 2008 6:36 am
Car: 1992 240sx coupe
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what it means when the spark plugs are black
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