QUOTE(BeatNavy @ Oct 14 2019, 04:16 PM)
A bad MPS shouldn't cause injectors not to fire.
Most common failure of MPS is diaphragm failure which causes the ECU to see full load and thus run very rich.
Always good to test your MPS, but specifically for injectors not firing I would check, in order.
1. Injector grounds. (these ground at the center line of the engine case towards the rear of the car)
2. FI trigger points
3. Wiring harness
4. The ECU itself (no real easy way to test without swapping it out)
This assumes you are talking about the injectors not getting a pulse electrically. Mechanically there are other factors to consider like no fuel pressure or gummed up injectors. (im not sure if your conclusion that they are not firing was based on an electrical test or just pulling one to see if it squirts)
things to consider:
1. Can you hear the fuel pump prime when you first turn on the key?
2. Key on/slowly opening the throttle from the engine bay, can you hear the injectors click (should be ~10 times to full open)
If #1 fails than you need to look at pump/relay/ECU
If #2 checks out than grounds/wiring are at least somewhat functional and you should focus on trigger points/ECU (provided #1 also passed)