All four injectors stopped working - 1992 Nissan 240SX Fastback

Check the solenoid on diesel pump

Check crankshaft sensor.

There may not be anything wrong. On a two-injector throttle body, the second injector acts similarly to a four barrel carburetor. On a four barrel, only two barrels supply fuel until you kick the accelerator pedal down hard for quick power for passing as such. At idle or normal cruise the second injector in non-operable. Only when you kick the pedal down (passing gear in old school terms), does the second injector activate.

Usually if the fuse is blowing the injector is faulty. The injector could be shorting to ground, or the problem could be in the wiring. The computer only grounds the injector to make it work.

try the distributor cap

Yes, This happens more and more. You can verify this wile your changing the injector by turning on the key after you pull the fuel rail (keeping the injectors on the rail).
Good job finding this. There are a lot of people that would over look this important factor.
Good Luck and God Bless.

If you have four cyl. have four injectors.

you could but its not going to work again????
try it out on a different cylender first if it still wont go
just put in a recon injector or a second hand one

The injectors can be serviced,but have you checked the injector is being driven by the ECU first?

hi unlikley to computer on the fuel rail there is a pressure relief control valve some are operated by vacuum so check the hoses some are electrical this controls fuel to all injectors it may be open all the time and fuel going straight to the return to the tank if this is the case there is no pressure for the injectors to work the individual injectors you can buy a tool that fits on the injector and connecting loom thats not dear so it lights flash as the pluses open the injectors or get a multi meter the wires that fit on the injector one is ground usually [black or brown] and the other is a 5v live when cranked yates210456