1990 Nissan 300ZX Problems
RepairPal has identified the most common problems with the 1990 Nissan 300ZX based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
If the vehicle fails the “State Smog Test” due to high emission readings, components in the pollution control system (air injection components) may have failed due to moisture and may need to be replaced.
If the car is emitting blue smoke from the tail pipe, from burned oil, be sure both PCV valves are functioning properly prior to replacing the turbocharger.
The exhaust manifold often warps, breaking off the studs between the cylinder head and the exhaust manifold. The noise may be most noticeable when the engine is cold.