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1990 Nissan 300ZX
Fuel Injectors May Fail and Cause Drivability Concerns
The fuel injectors can fail and cause drivability problems. Often there is no Check Engine light and the failures can be caused by corrosion of the connector, clogging beyond the point of cleaning, and/or internal failures.
Ticking Noise When Cold Due to Broken Exhaust Manifold Studs
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.
Check PCV valves if vehicle emits blue smoke
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.
Air injection components may fail and cause vehicle to fail smog test
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.