Injector Low Fault

[Ankur]

Hello There

We are using M142-GPR diesel for a two-cylinder (0.9 L) diesel engine.
2 DI injector : Bosch
1 DRV (for rail pressure control): Bosch

Everything works perfectly for double injections (1 pilot + 1 main). However for triple injection ( 2 pilots + 1 main), the rail pressure falls abruptly and the fuse blows off repeatedly.

Can you please suggest what is the recommended fuse rating (in amps) for the proper working of the ECU? And is there any other reason which is causing this issue?

Thank you ...