> Neither myself nor the local Nissan dealer
> can get my '78 to run well. It was running
> great and then all of a sudden the car began
> to run too rich. I have replaced the air
> flow meter, cold start injector and injector
> plugs.The thermal switch seems to test okay.
It does it continually and they can't find the problem? Are there any Z specialty places in your area? Check all the plug connections and clean them. Check the throttle position sensor to make sure it isn't in full mode all the time, how's the air flow meter adjusted? Is it leaned out? They are adjustable. Does it run too rich when cold and warm? Fuel pressure regulator? Air control valve?