My 1986 Nissan 300zx non-turbo was running fine, then just stalled out suddenly and would not restart. I checked the plugs, wiring, fuel, all are OK. I installed a new coil, distributor cap and rotor. If I unplug the connector wire to injector #2, engine will start but idles on only 2 or 3 cylinders (very weak ignition in cylinders 2, 4 and 6). When car is idling, if I reconnect injector #2 again, engine will stall out and will not restart - unless I spray carb & choke cleaner into the air intake while cranking the starter. Then it will start. I checked the fuel pressure and it is 37-40 psi at idle. Does anyone have an idea what the problem is?

Thanks for the quick response and the good suggestion. I will check all of the fuel injectors, especially #2 and will report back. Thank again! I appreciate it! Thanks for the quick response and the good suggestion. I will check all of the fuel injectors, especially #2 and will report back. Thank again! I appreciate it!

Thank you, hoser20000! You're a genius!

We just checked the ohm readings at injectors 1, 2 and 3 (the others are buried deep under wiring and hoses...) and the reading at #2 was only 1/3 of the readings at #1 and #3 - so #2 injector is definitely failed.

Lots of work ahead to change it - and check the others - and I really appreciate your very professional help!

Thanks again! Thank you, hoser20000! You're a genius! We just checked the ohm readings at injectors 1, 2 and 3 (the others are buried deep under wiring and hoses...) and the reading at #2 was only 1/3 of the readings at #1 and #3 - so #2 injector is definitely failed. Lots of work ahead to change it - and check the others - and I really appreciate your very professional help! Thanks again!