Nissan 300ZX Engine Runs Rough

My Car's Engine Started Running Rough While At A Stop Light. After I Parked For An Hour And Restarted The Car, It Ran Fine Going Home....

Hi, I Have A 87 Nissan 300zx Non-turbo And I Recently Took Out My Plugs And Visually Checked Them They All Looked Really Good So I Put Them...

When Given A Cold Start, Especially In High Humidity, The Car Has A Hard Time Starting Up (turns Over Just Fine, But Can Take 3 Or 4 Seconds...