Injectors not pulsing

does it have spark ?
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If you watch any of these ,watch the last one .Ignition control module can cause no injector pulse but still have spark

Does it have good spark at plugs, good fuel pressure to injectors and injector pulsing, good cylinder compression ?

well you need to identify what is missing. An engine needs ignition spark, fuel and injector pulse to start. (assuming mechanically the engine is ok. Like good compression and cam timing ok) A fuel pressure test is needed to see if it has good fuel pressure. Test for spark and injector pulse. If the fuel pressure is ok but it doesn't have spark or pulse it is usually and crank position sensor but on Nissans it could also be a faulty cam position sensor. Without the proper test equipment you will need to have a qualified mechanic diagnose it for you. I wouldn't start throwing parts at it.

yes

Hi you need to check for fuel pressure and volume then injector pulse . check for spark , check timing and compression.
If you dont find injector pulse or spark , suspect your cam and crank shaft position sensor.
Hope this helps a bit ,
kind regards Faldih Higgins

its pretty simple to check for fuel pressure. If there is no fuel pressure than the next step is to check for power and ground at the pump. if those check out then a new fuel pump should fix the problem.

your engine needs 3 things to run. fuel, spark, and compression. if you have fuel pressure than check for spark. if there is no spark than there could an issue with a crank or cam sensor. If the crank sensor is bad than typically there will be no injector pulse as well. after cranking it over a couple times pull a plug and see if it is wet. if it is you know the crank sensor is working and the fuel pump is working and you have a spark issue. If it is dry than there is a fuel delivery issue (fuel pump/injector/injector pulse/etc.)

there are many things you can check very easily to help narrow down the possibilities.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

FUEL INJECTED CARS REQUIRE LOTS OF FUEL PRESSURE. THE ELEMENTS NECESSARY FOR STARTING ARE: SPARK ,COMPRESSION, FUEL, FUEL PRESSURE, TIMING AND CRANK AND CAM SENSOR SIGNALS AT THE PROPER MOMENT AND STARTER MOTOR ENGAGEMENT. FUEL PRESSURE REQUIRED IS USUALLY 30-50 LBS DEPENDING ON THE TYPE OF CAR. THE COMPUTER MUST PULSE THE INJECTORS.

Unhook the catlic converter in the exhaust and the truck will start, if you have spark, fuel and compression.

Back firing is caused but lean conditions suggest a fuel injector volume test. This requires a injector pulse generator. pulse each injector for same interval usually 100ms and record pressure drop and re prime line between each test for accurate values. If all is fine. remove valve cover check for broken valve spring or flat camshaft lobe. low rocker arm movement.

WOW a 94 with 46K on it thats rare. Your computer may be bad it sends the pulse to the injector.