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Car bucks at low speeds
1990 Nissan 300ZX

CAR BUCKS AT LOW SPEEDS

(1990 Nissan 300ZX)
I HAVE A 1987 300ZX. LATELY THE CAR BUCKS AT SPEEDS UNDER 30 mph. I ADDED FUEL INJECTOR CLEANING FLUID, BUT NO LUCK.
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Popular Answer
check out the dealership 1984-1989 300zx get free fuel injection change
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General Diagnosis
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check out the dealership 1984-1989 300zx get free fuel injection change
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I would probably suspect ignition failure of some sort. As you put load on the engine one of the ignition coils may be failing. Remove the ignition coils and inspect for signs of arcing or break down of insulation. Perhaps you may even find a bad wiring connection on the grey electrical socket at the top of each coil. Remove the spark plugs and inspect. Are each of them the same color, replace them if required. Remove the air duct from each throttle housing and clean the throttle housings with Chemtool or equivalent product.
The fuel filter is easy to change and may be a good time to change that as well.
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