Could very well be the spark plugs or possibly fuel injectors. I had the same problem and it was the spark plugs. check for dead spots in your tps. also check that the resistance in your airflow meter is consistant.
According to the Datsun 280ZX Service Manual for 1979, the plug gap is: 1.0 to 1.1 mm (0.039 to 0.043)
To troubleshoot the ignition system of a Datsun 280ZX, start by checking the battery voltage to ensure it's fully charged and connections are clean. Inspect the ignition coil for proper operation; measure its resistance and look for any signs of damage. Next, examine the distributor, including the rotor and cap for wear, and ensure the timing is set correctly. Finally, verify that the spark plugs are in good condition and firing by checking for spark when cranking the engine.
when do you change spark plugs
The book says to gap them @ 0.32.
ngk plugs are .31 to .35
firewall passenger side just below the spark plugs
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
How to change the spark plugs
how to change spark plugs on a 2001 expedition
2002 galant , can't find the spark plugs
How do you change the spark plugs in 2001 lexus rx300?