So this is an update on my last question, the comments were a mess and I was new to the site I have a 1985 nissan 300zx vg30e and I just changed the spark plugs and its idling really rough and at 550rpm almost like the engine is shivering, the parts desk gave me e3-56 spark plugs I searched it up and supposedly fits the car, say the electrode gap was different, would this behavior make sense?



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