TwinTurbo.NET: Nissan 300ZX forum - Rough idle
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Subject Rough idle
     
Posted by huey24nissan(NC) on April 02, 2011 at 9:42 PM
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Message I've done a power balance test and narrowed it down to cylinder #1, right by the oil filler cap. Swapped coil packs, same problem, same cylinder.

Pulled the plug and laid across the plenum. Had wife watch while I cranked car in the dark and she saw spark so I am assuming it's a fuel injector ?

Mechanic has recently done cleaning/replacing fuel injector connectors, new coil pack connectors, new ptu subharness and relocation. I can't really see it being any of those items.

Any help or opinions would be greatly appreciated. I have a multimeter but not sure of the exact step by step procedures to ohm test the injectors, like the settings and test points and how to access them.

Thanks for your time,

Russell

     
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