280z misfire Need help

[Huggies1978]

I have a 78 280z that likes to misfire when it gets to runing temperature i have tried timing i have tried a new coolant temperature conector but not the sensor if anyone has any ideas please let me know

[NSR_s30]

Check plug wires, spark plugs, injectors?

[ravera]

Once you've figured out all the plugs and injectors are firing, take the plugs out, if they're really carbon coated, check the thermaltime and the cold start injector... The computer may be leaving the cold start injector on after it's warmed up leaving WAY too much gas in the motor.

[evildky]

O2 sensor? a bad O2 sensor will cause the car to run a bit rich

have you checked your ignition tiing? have you tried adjusting your afm?