Question about 1990 Nissan 300ZX

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My zeds sick

I have a 1990 zx with the vg30dett and cylinder 4 isnt firing..have sufficiant spark new iridium plugs replaced coilpack.. volts at coilpack and injector..put a stethescope on the injector and clicking well..took the spark plug out and run the engine at first appeared the chamber was flooded with fuel but cleared it out and by the sounds of things good compression although i will have to replace the valve seals at some stage as it does smoke quite profussely on warmup out of the left bank..also the plug had alot of oil on it..shes been a real pig on gas lately as well (understatement!!)..traced and retightend all links from tank to regs but cant seem to get fueltight pressure..any thaughts??

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Are you getting sufficient pressure @ the rail?

Posted on May 21, 2009


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I want to replace the standard spark plug of my 1995 2.0 Honda Accord to Iridium Spark Plug. What is the specs of the Iridium Spark Plug will I buy? Does this help in improving the engine performance? in...

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Aug 20, 2009 | 1990 Nissan 300ZX

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