It is real easy to think it is the injectors fault for a miss but it might not be. first check compression. If that is good check for spark. If that's good then noid light check ( hook up a light build the the injector wiring and make sure it pulses ). If all these things are good, then you have narrowed it down to a bad injector.
Bad fuel pump, clogged or broken fuel lines, or if it is fuel injected it could be bad fuel injectors.
Bad fuel line? Bad fuel filter? Bad fuel tank? Bad throttle body? Bad injectors?
Possible reasons the fuel injectors are not working: Faulty ECM (engine control module, computer) Faulty fuel injector(s). Fuel injectors clogged. Insufficient fuel pressure. Bad Ground. Faulty wiring otherwise.
you may have bad injectors, or not enough fuel pressure
Bad fuel filter or clogged fuel injectors
Bad as in dirty would simply supply unfiltered fuel to the injectors resulting in misfiring,hard starting and uneven and generally bad acceleration.Bad as in faulty could lead to fuel starvation,motor won't start, rev,cut out etc. no, supply unfiltered gas to the injectors? its a restriction, meaning no or very little gas to injectors, low or no fuel pressure
bad fuel injectors, bad timing, bad spark plugs and wires, clogged catalytic converter.
Check the fuel injectors . one or more are bad or going bad.
Switch the electrical connections between the two injectors and see if the same one is still bad or if the problem switched to the other one. If the same one is bad, you have a bad injector.
You either have bad fuel injectors or your fuel pressure regulator has gone bad
A clogged fuel filter, bad fuel pump or the fuel line is blocked/damaged. What about a fuel relay fuse?
The engine will run rough with a faulty fuel injector. More than one or two bad fuel injectors at one time would be unusual.