TwinTurbo.NET: Nissan 300ZX forum - Have you checked your plugs?
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Subject Have you checked your plugs?
     
Posted by -Grimm- on December 10, 2013 at 9:57 AM
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In Reply To Re: what would cause back fire posted by TJSB on December 10, 2013 at 09:34 AM
     
Message You can read the plugs to see how the engine is running.

If you have fuel leaking past an injector seal you will have one carbon fouled plug.

If you have a vacuum leak you will be able to see it on the plugs too (running lean)

If that checks out, and your ignition timing checks out, you may have some electrical issues (sensor related)

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1992 300ZX NA 5 Sp (Dead)
1990 300ZX NA Auto 2+2 (Dead)
1990 300ZX TT 5 Sp (Building)
2004 G35 Sport 6MT (DD)

     
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